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Vol. 3 (2) Apr – Jun2012 www.ijrpbsonline.com 706

International Journal of Research in Pharmaceutical and Biomedical Sciences ISSN: 2229-3701

____________________________________________Research Article

Diabetes Mellitus and its Herbal Treatment

Pallab Das Gupta and Amartya De*

BCDA College of Pharmacy and Technology, 78 Jessore road (south), Hridaypur, Barasat, Kolkata, west Bengal, India. __________________________________________________________________________________ ABSTRACT Diabetes mellitus is a group of metabolic diseases characterized by high blood sugar (glucose) levels, that result from defects in insulin secretion, or action, or both. Herbal medicines have been highly esteemed source of medicine throughout the human history. They are widely used today indicating that herbs are a growing part of modern high-tech medicine. Some of the herbal plants and active chemical constituents which have a role in the management of Diabetes mellitus are compiled here are discussed in this review. Key Words: Diabetes Mellitus, Blood Sugar, Insulin, Oral Hypoglycemic agent, Herbal treatment. INTRODUCTION Diabetes mellitus is a group of metabolic diseases characterized by high blood sugar (glucose) levels, that result from defects in insulin secretion, or action, or both. Diabetes mellitus, commonly referred to as diabetes (as it will be in this article) was first identified as a disease associated with "sweet urine," and excessive muscle loss in the ancient world. Elevated levels of blood glucose (hyperglycemia) lead to spillage of glucose into the urine, hence the term sweet urine.

Normally, blood glucose levels are tightly controlled by insulin, a hormone produced by the pancreas. Insulin lowers the blood glucose level. When the blood glucose elevates (for example, after eating food), insulin is released from the pancreas to normalize the glucose level. In patients with diabetes, the absence or insufficient production of insulin causes hyperglycemia. Diabetes is a chronic medical condition, meaning that although it can be controlled, it lasts a lifetime.1

Blood sugar level in normal & diabetic patients

Category of a person Fasting Value Post Prandial

Minimum Value Maximum Value Value 2 hours after consuming glucose

Normal 70 100 Less than 140

Early Diabetes 101 126 140 to 200

Established Diabetes More than 126 - More than 200 * All values are in mg/100ml The two types of diabetes are referred to as type 1 (insulin dependent) and type 2 (non-insulin dependent). The major complications of diabetes are both acute and chronic. Acutely Dangerously elevated blood sugar, abnormally low blood sugar due to diabetes medications may occur. Chronically Disease of the blood vessels (both small and large) which can damage the eye, kidneys, nerves, and heart may occur

Diabetes treatment depends on the type and severity of the diabetes. Type 1 diabetes is treated with insulin, exercise, and a diabetic diet. Type 2 diabetes is first treated with weight reduction, a diabetic diet, and exercise. When these measures fail to control the elevated blood sugars, oral medications are used. If oral medications are still insufficient, insulin medications are considered.2



Regulation of blood glucose in normal & diabetic patients3,4

( in normal case)

(in diabetic patients)

Causes of Diabetes Insufficient production of insulin (either absolutely or relative to the body's needs), production of defective insulin (which is uncommon), or the inability of cells to use insulin properly and efficiently leads to hyperglycemia and diabetes. This latter condition affects mostly the cells of muscle and fat tissues, and results in a condition known as "insulin resistance." This is the primary problem in type 2 diabetes. The absolute lack of insulin, usually secondary to a destructive process affecting the insulin producing beta cells in the pancreas, is the main disorder in type 1 diabetes. In type 2 diabetes, there also is a steady decline of beta cells that adds to the process of elevated blood

sugars. Essentially, if someone is resistant to insulin, the body can, to some degree, increase production of insulin and overcome the level of resistance. After time, if production decreases and insulin cannot be released as vigorously, hyperglycemia develops. Glucose is a simple sugar found in food. Glucose is an essential nutrient that provides energy for the proper functioning of the body cells. Carbohydrates are broken down in the small intestine and the glucose in digested food is then absorbed by the intestinal cells into the bloodstream, and is carried by the bloodstream to all the cells in the body where it is utilized. However, glucose cannot enter the cells alone and needs insulin to aid in its transport into the cells. Without insulin, the cells become starved of glucose energy despite the presence of abundant glucose in the bloodstream. In certain types of diabetes, the cells' inability to utilize glucose gives rise to the ironic situation of "starvation in the midst of plenty". The abundant, unutilized glucose is wastefully excreted in the urine. Insulin is a hormone that is produced by specialized cells (beta cells) of the pancreas. (The pancreas is a deep-seated organ in the abdomen located behind the stomach.) In addition to helping glucose enter the cells, insulin is also important in tightly regulating the level of glucose in the blood. After a meal, the blood glucose level rises. In response to the increased glucose level, the pancreas normally releases more insulin into the bloodstream to help glucose enter the cells and lower blood glucose levels after a meal. When the blood glucose levels are lowered, the insulin release from the pancreas is turned down. It is important to note that even in the fasting state there is a low steady release of insulin than fluctuates a bit and helps to maintain a steady blood sugar level during fasting. In normal individuals, such a regulatory system helps to keep blood glucose levels in a tightly controlled range. As outlined above, in patients with diabetes, the insulin is either absent, relatively insufficient for the body's needs, or not used properly by the body. All of these factors cause elevated levels of blood glucose (hyperglycemia).5

Pathophysiology of Diabetes Type 1 Diabetes Mellitus (DM) is a catabolic disorder in which circulating insulin is very low or absent, plasma glucagon is elevated, and the pancreatic beta cells fail to respond to all insulin-secretory stimuli. The pancreas shows lymphocytic infiltration and destruction of insulin-secreting cells of the islets of Langerhans, causing insulin deficiency. Patients need exogenous insulin to reverse this catabolic condition, prevent ketosis, decrease hyperglucagonemia, and normalize lipid and protein metabolism.



One theory regarding the etiology of type 1 DM is that it results from damage to pancreatic beta cells from infectious or environmental agents. In a genetically susceptible individual, the immune system is thereby triggered to develop an autoimmune response against altered pancreatic beta cell antigens or molecules in beta cells that resemble a viral protein. Approximately 85% of type 1 DM patients have circulating islet cell antibodies, and the majority also have detectable anti-insulin antibodies before receiving insulin therapy. Most islet cell antibodies are directed against glutamic acid decarboxylase (GAD) within pancreatic beta cells. Currently, autoimmunity is considered the major factor in the pathophysiology of type 1 DM. Prevalence is increased in patients with other autoimmune diseases, such as Graves disease, Hashimoto thyroiditis, and Addison disease. Approximately 95% of patients with type 1 DM have either human leukocyte antigen (HLA)-DR3 or HLA-DR4. HLA-DQs are considered specific markers of type 1 DM susceptibility. Amino acid metabolism also plays a key role in the pathogenesis of diabetes. Amino acid profiles could help assess risk of developing diabetes.[6] It might help elucidate further how diabetes evolves. Recent evidence suggests a role for vitamin D in the pathogenesis and prevention of diabetes mellitus. Vitamin D deficiency is also an important independent predictor of development of coronary artery calcification in individuals with type 1 DM.[7] Joergensen et al determined that vitamin D deficiency in type 1 diabetes may predict all causes of mortality but not development of microvascular complications.[8] The contribution of vitamin D deficiency to mortality must be mediated by nonvascular mechanisms. Type 2 diabetes is characterized by the combination of peripheral insulin resistance and inadequate insulin secretion by pancreatic beta

cells. Insulin resistance, which has been attributed to elevated levels of free fatty acids in plasma,[9] leads to decreased glucose transport into muscle cells, elevated hepatic glucose production, and increased breakdown of fat. For type 2 Diabetes Mellitus to occur, both defects must exist. For example, all overweight individuals have insulin resistance, but diabetes develops only in those who cannot increase insulin secretion sufficiently to compensate for their insulin resistance. Their insulin concentrations may be high, yet inappropriately low for the level of glycemia. Beta cell dysfunction is a major factor across the spectrum of pre-diabetes to diabetes. A study of obese adolescents by Bacha et al confirms what is increasingly being stressed in adults as well: Beta cell function happens early in the pathological process and does not necessarily follow stage of insulin resistance.[10] Singular focus on insulin resistance as the "be all and end all" is gradually shifting, and hopefully better treatment options that focus on the beta cell pathology will emerge to treat the disorder early. In the progression from normal glucose tolerance to abnormal glucose tolerance, postprandial blood glucose levels increase first; eventually, fasting hyperglycemia develops as suppression of hepatic gluconeogenesis fails. During the induction of insulin resistance, such as is seen after high-calorie diet, steroid administration, or physical inactivity, increased glucagon levels and increased glucose-dependent insulinotropic polypeptide (GIP) levels accompany glucose intolerance; however, postprandial glucagonlike peptide-1 (GLP-1) response is unaltered.[11]This has physiologic implications; for example, if the GLP-1 level is unaltered, GLP-1 may be a target of therapy in the states mentioned above.



The high mobility group A1 (HMGA1) protein is a key regulator of the insulin receptor gene (INSR).12 Functional variants of the HMGA1 gene are associated with an increased risk of diabetes. These variants were shown to lead to reduction in protein content of both HMGA1 and INSR. Although the pathophysiology of the disease differs between the types of diabetes, most of the complications, including microvascular, macrovascular, and neuropathic, are similar regardless of the type of diabetes. Hyperglycemia appears to be the determinant of microvascular and metabolic complications. Macrovascular disease, however, is much less related to glycemia. Insulin resistance with concomitant lipid abnormalities (ie, elevated levels of small dense low-density lipoprotein cholesterol [LDL-C] particles, low levels of high-density lipoprotein cholesterol [HDL-C], elevated levels of triglyceride-rich remnant lipoproteins) and thrombotic abnormalities (ie, elevated type-1 plasminogen activator inhibitor [PAI-1], elevated fibrinogen as well as conventional atherosclerotic risk factors (eg, family history, smoking, hypertension, elevated LDL-C, low HDL-C), determine cardiovascular risk. Unlike liver and smooth muscle, insulin resistance is not associated with increased myocardial lipid accumulation13 Increased cardiovascular risk appears to begin prior to the development of frank hyperglycemia, presumably because of the effects of insulin resistance. Stern in 1996[14]and Haffner and D'Agostino in 1999[15]developed the "ticking clock" hypothesis of complications, asserting that the clock starts ticking for microvascular risk at the onset of hyperglycemia, while the clock starts ticking for macrovascular risk at some antecedent point, presumably with the onset of insulin resistance. Symptoms The early symptoms of untreated diabetes are related to elevated blood sugar levels, and loss of glucose in the urine. High amounts of glucose in the urine can cause increased urine output and lead to dehydration. Dehydration causes increased thirst and water consumption. The inability of insulin to perform normally has effects on protein, fat and carbohydrate metabolism. Insulin is an anabolic hormone, that is, one that encourages storage of fat and protein. A relative or absolute insulin deficiency eventually leads to weight loss despite an increase in appetite. Some untreated diabetes patients also complain of fatigue, nausea and vomiting. Patients with diabetes are prone to developing infections of the bladder, skin, and vaginal areas.

Fluctuations in blood glucose levels can lead to blurred vision. Extremely elevated glucose levels can lead to lethargy and coma16. Herbal Treatment of Diabetes Mellitus BITTER MELON

Biological source It is obtained from edible fruit of Momordica charantia, belonging to the family Cucurbitaceae. Chemical constituents The plant contains several biologically active compounds- a) Chiefly momordicin I & momordicin II,

cucurbitacin B b) Glycosides ( momordin, charantin,

charantosides, goyaglycosides) c) Terpenoid compounds- momordicinin,

momordicilin, momordol d) Cytotoxic ( ribosome inactivating) proteins

such as momorcharin & momordin.[17] Uses Bitter melon is used as anti-diabetic. It contains lectin that has insulin like activity due to its non- protein specific linking toghther to insulin receptors. This lectin lowers blood glucose level by acting on peripheral tissues. Lectin is a major contributor to hypoglycemic effect.[18] Scientific work done- Triterpenoids Isolated from Bitter Melon has showed antidiabetic activity.19 Dosage form It is used as fresh juice, tincture, juice extract & powered leaf. Dose Fresh juice- 57-113 gm daily, Tincture- 1.3 ml/ twice/ daily, Juice extract- 300-600 mg, Powered leaf- 1-2 gm FIERY COSTUS



Biological Source It is obtained from the leaves of the plant Costus igneus, belonging to the family Costaceae. Chemical Constituents- The main chemical constituents are Beta-carotene, deoxyribose, phenol, flavonoids, insulin precursors. Uses- The leaves of insulin plant reduced the fasting and postprandial blood sugar levels, bringing them down towards normal. Reduction in the fasting and the postprandial blood sugar levels with leaves of insulin plant was comparable with that obtained with Glibenclamide 500 µg/kg at 250 mg/kg/day and 500 mg/kg/day of powdered leaves of the insulin plant. The hypoglycemic action can be due to release of insulin, insulin-sensitizing action or a combination of both. Hence further studies need to be undertaken to determine the mechanism of action by measurement of either insulin or 'C' peptide level.20

Scientific work done Costus igneus has showed effect on hyperglycemia.21

Dosage Forms- It is used as oral hypoglycemic agent, or as i.v. injection Dose- Tablet- 1 tablet/ day Dandelion

Biological Source It is obtained from the leaves of Taraxacum officinale, belonging to the family Asteraceae. Chemical Constituents 1. Sesquiterpene lactones (bitters): taraxinic acid (taraxacin), tetrahydroridentin B 2. Triterpenoids and sterols: taraxasterol, taraxerol, cycloartenol, beta-sitosterol 3.Other: Vitamin A, Vitamin C, tannins, alkaloids, pectin, inulin, starch, potassium, beta carotene, caffeic acid, flavonoids (apigenin)[22]

Uses It is a good antidiabetic drug. It can lower the blood glucose level .Tests on diabetic mice show that dandelion extract may help regulate blood sugar and keep cholesterol in check.[23]

Scientific work done Dandelion has showed antihyperglycemic effect.[24] Dosage forms Capsules, tinctures, and teas containing dandelion leaves, roots, flowers, or the entire plant is used. Doses Capsules- taken after each meal Adult doses: There is disagreement on the optimal form and dose of dandelion. Reputable physicians and herbalists recommend a range of doses

Fresh leaves: 4-10 grams daily Dried leaves: 4-10 grams daily Fresh leaf juice: 1 tsp (4-8 ml) twice daily Fluid extract: 1-2 teaspoons daily Fresh roots: 2-8 grams daily Dried powdered extract: 250-1000 mg three to four times daily Tea: Pour 2 cups boiling water over one ounce of fresh leaves and steep for 10 minutes. Or, boil 1 cup of water with 2-3 tsp of dried, cut root for 15 minutes. Cool. Pediatric dosages: Unknown French Lilac

Biological Source It consists of the aerial parts of the plant, flowers, leaf, stem, seeds of the plant Galega officinalis, belonging to the family Fabaceae. Chemical Constituents Oleanane & ursane type triterpinoids like sophoradiol, soyasapogenol b, & 9-sitosterol, Sophorediol,galactogil,galegine,peganine, hydroxygalegine,vasicinone, alkaloids like lutein,pentahydroxyflavone 5 glucoside, luteoline, galuteoline, luteoline 5 glucosides,flavonoids, saponines etc.25

Uses It has been known since the Middle Ages for relieving the symptoms of diabetes mellitus. Upon



analysis, it turned out to contain compounds related to guanidine, a substance that decreases blood sugar by mechanisms including a decrease in insulin resistance, but were too toxic for human use. Georges Tanret identified an alkaloid from this plant (galegine) that was less toxic, and this was evaluated in clinical trials in patients with diabetes in the 1920s and 1930s. Other related compounds were being investigated clinically at this time, including biguanide derivatives. This work led ultimately to the discovery of metformin (Glucophage), currently recommended in international guidelines for diabetes management as the first choice for antidiabetic pharmacotherapy alongside diet and exercise[26] and the older agent phenformin, which has been withdrawn in most countries due to an unacceptable risk of lactic acidosis (the risk of lactic acidosis with metformin is no higher than with other antidiabetic therapies when it is prescribed according to its label)27 The study of galegine and related molecules in the first half of the 20th century is regarded as an important milestone in the development of oral antidiabetic pharmacotherapy.28

Dosage form It is used as herbal infusion, tincture & leaves. Doses- Herbal infusion- twice daily, Tincture- thrice daily GULVEL

Biological source It is obtained from the stems and roots of Tinospora cordifolia, belonging to the family Menispermaceae. Chemical Constituents The active adaptogenic constituents are diterpene compounds including tinosporone, tinosporic acid, cordifolisides A to E, syringen, the yellow alkaloid, berberine, Giloin, crude Giloininand, a glucosidal bitter principle as well as polysaccharides, including arabinogalactan polysaccharide (TSP). Picrotene and bergenin were also found in the plant. The active principles of Tinospora cordifolia,

a traditional Indian medicinal plant were found to possess anticomplementary and immunomodulatory activities.29

Use It is used as antidiabetic30. Scientific work done Tinospora cordifolia has showed Anti-diabetic activity.31 Dosage form Aqueous extract of roots is used. Dose Aqueous extract of root- 2.5g, 5 g/ kg body weight TURMERIC

Biological Source It consists of dried fresh rhizomes of the plant Curcuma longa belonging to the family Zingiberaceae. Chemical Constituents Turmeric contains 5% of volatile oil, resin, zingiberaceous starch grains & yellow coloured curcuminoids. The chief components of curcuminoids is known as curcumin. Volatile oil is composed of mono and sesquiterpens such as alpha & beta pinene, alpha- phellandrene, camphor, camphene, zingiberene, alpha & beta curcumenes.32 Use- It is used as antidiabetic drug.33 Scientific works done 1. Turmeric has showed hypoglycemic, hypolipidemic & antioxidant activity34 2. Turmeric has shown effect in diabetes.[35]

Dosage form Powdered form of turmeric is used. Dose Powdered turmeric- 500-8000 mg/ day . GURMAR



Biological source It is obtained from leaves & roots of Gymnema sylvestre, belonging to the family Asclepiadaceae. Chemical constituents The principal active ingredient is gymnemic acid. The other compounds found are calcium oxalate, anthraquinone compound, tartaric acid, cellulose but no tannin is present36. Uses 1) This is one of the main herbs used for healing diabetes mellitus. 2) Gymnema removes sugar from pancreas, restores pancreatic function. 3) Gymnema stimulates circulatory system, increases urine secretion.37 Scientific works done 1. Gymnema sylvestre has shown Enzyme changes and glucose utilization.38

2. Gymnema sylvestre has showed effect in controlling blood glucose level.39

Dosage forms It is used as water soluble acidic solution & as powered leaf. Doses Power leaf- 2-4 mg/daily, Water soluble acidic solution- 400 mg/day BAEL

Biological source It consists of unripe or half ripe fruits of the plant known as Aegle marmelos, belonging to the family Rutaceae. Chemical constituents The chief constituent of the drug is marmelosinn ( 0.5%) which is a furocoumarin. Other coumarins are marmesin, psoralin, umbelliferone. The drug also contains carbohydrate, protein, volatile oil & tannins. The pulp also contains good amount of vitamin A & C. Two alkaloids, O-methylhalfordinol & isopentylhalfordinol has been isolated from fruits.[40] Use It is used as anti-diabetic drug.41

Scientific work done

Leaf & callus extract of Aegle marmelos has shown antidiabetic activity. [42] Dosage forms It is used as aqueous decoction & aqueous leaf extract. Doses Aqueous decoction- 1 ml/ 100 mg, Aqueous leaf extract- 1 gm/ kg/ AMLA

Biological Source It is obtained from the dried as well as fresh fruits of Emblica officinalis, belonging to the family Euphorbiaceae. Chemical Constituents Amla is a rich natural source of vitamin C. It contains 0.5% fat, phyllemblin, 5% tannin. It also contains phosphorus, iron & calcium. It contains pectin & 75% moisture43. Use- It is used as anti-diabetic44. Scientific work done Emblica officinalis has shown Anti-diabetic activity in animal models. 45

Dosage form It is used as amalaki capsules. Dose Capsule- 1 capsule/ twice a day before meal FENUGREEK

Biological source It is obtained from the leaves and seeds of Trigonella foenum- graecum, belonging to the family Fabaceae.



Chemical constituents The nicotinic acid, alkaloid trogonelline, and coumarin contained by defatted section of the seed of fenugreek proves to be the responsible active ingredient for its anti-diabetic properties.[46] Uses- It is used as anti-diabetic. The fiber-rich fraction of fenugreek seeds can lower blood sugar levels in people with type II diabetes.46 Scientific works done- Metabolic and molecular action of Trigonella foenum-graecum (fenugreek) and trace metals has been shown in experimental diabetic tissues.47

2. Fenugreek Seed has shown the postprandial hypoglycemic activity48. Dosage forms The leaves & seeds of fenugreek are used in therapeutic purpose. Doses Leaves- 5-30 gm/ thrice daily with meal, Seeds- 3 ½ ounces/ daily. GINSENG

Biological Source It is obtained from the dried roots of Panax ginseng, belonging to the family Araliaceae. Chemical Constituents Ginseng contains a mixture of several saponin glycosides, belonging to triterpenoid group. They are grouped as follows- 1) Ginsenosides 2) Panaxosides 3) Chikusetsusaponin Ginsenosides contain aglycone dammarol while panaxosides have oleanolic acid as aglycone. About 13 ginsenosides have been identified. Panaxosides give oleanolic acid, panaxadiol & panaxatriol on decomposition.49 Use It is used as hypoglycemic agent.50 Scientific works done 1. Use of Ginseng in diabetes.51 2. Ginseng has shown hypoglycemic effect.52 Dosage forms dried root and tincture are used. Doses Dried root- 0.5- 9 gm/ daily, Tincture- 0.2- 3/ one to three times daily

INDIAN KINO TREE

Biological source It is obtained from the dried juice of the plant Pterocarpus marsupium & obtained by making vertical incisions to the stem bark & it belongs to the family Leguminaceae. Chemical constituents It contains about 70%- 80% of kinotannic acid, kino- red, k- pyrocatechin ( catechol) , resin & gallic acid. Kinotannic acid is glucosidal tannin, while kino- red is anhydride of kinoin. Kinoin is an insoluble phlobaphene & is produced by action of oxydase enzyme. It is more dark in colour than kinotannic acid. If the juice is boiled during drying, enzyme gets destroyed & thus insolubilisation & darkening is prevented.53 Uses The heartwood of the plant is used in treatment of diabetes. The gum resin is the only herbal product ever found to regenerate B cells that make insulin in the pancreas.54 Scientific works done 1.Phenolics from Pterocarpus marsupium has shown antihyperglycemic activity.55

2.Hypoglycaemic activity of Pterocarpus marsupium has been seen.56 Dosage forms The wood extract & bark decoction is used. Doses Wood extract ( pterostilbene ) – 10 mg/ kg, Bark decoction- 1 gm/ 100 mg body weight for 10 days. NAYANTARA

Biological source



It is obtained from the dried whole plant of Catharanthus roseus, belonging to the family Apocynaceae. Chemical constituents The main active compounds here are alkaloids & tannins. The major alkaloid is vincamine. Aclosely related semi-synthetic derivative of vincamine is vinpocetin. There are over 130 constituents with an indole or dihydroindole structure, including the principal component vindoline, vinblastine, vincristine, learocristine, vinine, ajmalicine, leurocine, vinomine etc.57 Use- It is used as antihyperglycemic agent.58 Scientific works done 1. Effect of an antidiabetic extract of Catharanthus roseus has been seen.59 2. The juice of fresh leaves of Catharanthus roseus has shown reduction blood glucose.60

Dosage forms It is used as tincture & infusion. Doses Tincture- 1-2 ml/ 3 times daily, Infusion- 2-3 cups daily. NEEM

Biological source It is obtained from the leaves of Azadirachta indica, belonging to the family Meliaceae. Chemical constituents It contains glycerides of saturated & unsaturated fatty acids. The main fatty acids are oleic (50%) & stearic (20%) acids. The oil contains 2.0% of bitters, which are sulpher containing compounds, nimbidin, nimbin, nimbinin, nimbidol. The unsaponifiable part contains nimbosterol ( 0.03% ) The main limonoid that it contains is azadirachtin but it also contains azadiradione, fraxinellone, nimbin, salannin, salannol, vepinin, vilasinin.61 Use- It is used in diabetes.62 Scientific work done Azadirachta indica leaf extract has shown anti-hyperglycemic and antidyslipidemic activity.63

Dosage form Capsules are used. Dose Capsule- 1-2 capsules/ twice daily.

CINNAMON

Biological source It consists of dried inner bark of shoots of coppiced trees of Cinnamomum zeylanicum, belonging to the family Lauraceae. Chemical constituents- Cinnamon bark contains volatile oil, tannins, mucilage, calcium oxalate, starch & mannitol. Cinnamon oil contains cinnamaldehyde, other terpenes like phellandrene, pinene, cymene, caryophyllene.64 Uses- Cinnamon is used in the treatment of type II diabetes mellitus & insulin resistance.65 Scientific works done 1. Alcoholic Extract of Cinnamomum zeylanicum Leaves has shown antidiabetic Activity.66 2. Cinnamon improves glucose and lipid of people67 Dosage form It is mostly used as powdered form. Dose Powder- ½ teaspoon daily SAPTRANGI

Biological source It is obtained from the stem, root & leaves of Salacia oblonga, belonging to the family Hippocrateaceae. Chemical constituents It contains 2 potent alpha- glycosidase inhibitors- salicinol, kotalanol, sesquiterpene (salasol A & B) , triterpenes ( salasones A-E, salaquinones A & B )[68] Uses- It is used as anti-diabetic. It binds to intestinal enzymes alpha- glucosidases that break down carbohydrate into glucose in body68. Scientific work done Salacia oblonga has shown antidiabetic potential69. Dosage form Aqueous extract of the root bark is used.



Dose Aqueous extract of root bark- 250 ml/ kg ONION

Biological source- It is obtained from the bulb of the plant Allium cepa, belonging to the family Liliaceae. Chemical constituents- It contains essential amino acid composition of arginine, histidine, lysine, tryptophan, phenylalanine, methionine, threonine, leucine & isoleucine. The bulb on steam distillation yields an essential oil known as onion oil. The bulb contains several phenolic acid, such as protocatechuic acid, p-hydroxybenzoic acid, vanillic acid, caffeic acid, & o & p- coumaric acids. Citric, abietic, oxalic and mialic acids are also present. It also contains several oligo- saccharides.70 Uses- Onion consists of an active ingredient called APDS (allyl propyl disulphide). APDS has been shown to block the breakdown of insulin by the liver and possibly to stimulate insulin production by the pancreas, thus increasing the amount of insulin and reducing sugar levels in the blood. It is found to lower lipid levels, inhibit platelet aggregation and are antihypertensive. So, liberal use of onion is recommended for diabetes patients.71 Scientific work done Clinical Hypoglycemic effect of Allium cepa (Red onion) has been seen.72

Dosage forms Raw & boiled onion extracts are used. APDS can also be administered orally. Dose APDS- 125 mg/ kg to fasting humans. GARLIC

Biological source It consists of bulbs of the plant known as Allium sativum, belonging to the Liliaceae. Chemical constituents Garlic bulbs contain 29% of carbohydrate, about 56% of proteins (albumin), 0.1% of fat, mucilage, and 0.06- 0.1% of volatile oil. It also contains phosphorus, iron & copper. Volatile oil of the drug is the chief active constituent, and contains allyl propyl disulphide, diallyl disulphide, alliin and allicin. Alliin by action of enzyme allinlyase is converted into allicin. Garlic oil is yellow in colour.[73] Uses- Garlic cloves lower blood sugar significantly. Subsequently, scientific studies have proven that the presence of disulfides in garlic such as allyl propyl and diallyl sulfide have played a role in the decrease of blood glucose levels. They have been seen to have actions similar to Tolubutamide, a sulfonylurea drug of the first generation. They act on the pancreas and stimulate the production of insulin so as to control the sugar levels in the blood. It is those patients with type 2 diabetes who benefit the most out of this.74 Scientific work done Anti-diabetic and hypolipidaemic properties of garlic has been seen.[75] Dosage form Juice extract of it is used. Dose Juice extract- 50 ml / daily OPUNTIA

Biological source It is obtained from the stems of Opuntia ficus-indica, belonging to the family Cactaceae. Chemical constituents The main chemical constitutes are 3- methoxytyramine76, candicine77, hordinine78, N- methyltyramine79, tyramine79 etc. Use- It is used in the treatment of type II diabetes. Scientific work done Polysaccharides from Opuntia has shown anti-diabetic effects. [80] Dosage form Boiled stems are used. Dose- oiled stem- 100-500/ daily



BLUEBERRY

Biological source It is obtained from the leaves of Vaccinium myrtillus, belonging to the family Ericaceae. Chemical constituents The main chemical constituents are· flavonoids (hyperoside, isoquercitrin, quercitrin, astragaline),·anthocyanosides (myrtillin, malvidin, cyanidin, delphinidin and others), catechin tannins (2-10%), others (carbohydrates including invertose, organic acids, pectins, alkaloids)81 Uses- Blueberry is a natural herb of controlling or lowering blood sugar levels when they are slightly elevated. It contains an active agent known as myrtillin which is an anthocyanoside. It is weaker and less toxic than insulin.81 Scientific works done 1. Vaccinium myrtillus has shown antidiabetic activity.82 2. Vaccinium myrtillus has shown hypoglycemic effect.83 Dosage form- Leaf extracts are used. Dose- Leaf extract- 3 cups/ day Blackberry

Biological Source It is obtained from the edible fruits of the plant Rubus fruticosus belonging to the family Rosaceae. Chemical Constituents The principal compounds isolated from red blackberry leaves are hydrolyzable tannins. Simple compounds such as 1,2,6-tri-O -galloyl-glucose[84] and penta- O -galloyl glucose are oxidatively coupled through galloyl groups to form more complex compounds such as casuarictin, pendunculagin, sanguin H-685 and lambertianin

A[86], with as many as 15 galloyl groups coupled to 3 glucose units87. Common flavonoids have also been isolated from the leaves . Rutin was isolated88,,as were kaempferol, quercitin, quijaverin, and kaempferol-3- O -β-D-glucuronopyranoside89. Major leaf volatiles studied by GC-MS include the monoterpenes geraniol and linalool as well as 1-octane-3-ol and decanal90. Phenolic acids common to the Rosaceae family have also been identified.91

Use- It is used as anti-diabetic. Dosage form- It is used as fruit powder. Dose- Dried fruit powder- 20 mg/day. Herbal Home Remedies for Diabetes92 Diabetes has been referred to as 'Madhumeh' by Ayurveda. This desease is caused by imbalance of the hormone insulin (which controls the sugar level of blood) that has to be taken externally by a diabetes patient regularly. Ayurvedic therapies recommend many Indian herbs and general practices to improve the secretion of insulin through natural ways. Some of the home and herbal remedies prescribed by Ayurveda are described below. Include turmeric and cinnamon in your diets. You can even take one teaspoon of cinnamon powder daily. Soak one teaspoon of fenugreek seeds in 1 cup of water overnight. Drink this water in the morning on an empty stomach and eat the seeds. Take a bitter gourd, remove the seeds and saturate in a cup of water. Drain this preparation and drink every morning. Boil around fifteen mango leaves in one cup of water. Keep it over night and filter in the morning. Drink every morning on an empty stomach. Avoid oily, fried and starchy foodstuffs. Avoid coffee, sugar, refined flour and alcohol. Eat smaller meals (low fat diet) five to six times a day instead of having three large meals. Increase intake of vegetables like spinach, cucumber, tomatoes, onion, sprouts, beans, garlic etc. Refrain from taking stress. Do regular exercise. Walk for at least 40 minutes a day. Avoid red meat and excessive salt in your meals. Fish and soy can be taken due to their good protein value. Bitter herbs like Azadirachta Indica (Neem), bitter gourd and fenugreek are like miracle drugs for diabetics. Take them in any form you can. Avoid white bread, rice, potatoes, sweet and sugary foods. Chew 8-10 curry leaves (Meetha Neem) on an empty stomach. It is very effective for



bringing the urine and blood sugar to their normal levels, even in hereditary diabetic patients. Emblica officinalis or Indian gooseberry (Amla) is very beneficial for diabetic patients. Prepare a fine powder of dry amala and put this powder in water. Allow it to stand for some time. Then filter the solution and mix some lemon juice in it. Take this early in the morning. You can even use extract of amla easily available in the market. Syzygium cumini or Indian plum (Jamun), is considered a panacea for diabetes. Eating this fruit is very beneficial for patients of diabetes. In fact, more than fruit, the seeds of jamun fruit is beneficial when taken in powdered form mixed with some water. The holy fruit of India- the bel fruit or the Aegle marmelos has anti-diabetic properties. The

herbal extract of its leaves should be taken preferably with a pinch of black pepper. Garlic contains allicin that helps in reducing sugar level in blood. The leaves of Butea monosperma (Palas) tree are very useful in diabetes. They reduce blood sugar and are useful in glycosuria- the presence of large amount of glucose inurine. Tenner’s cassia (Tarwar) is an effective remedy for diabetes. A decoction of the whole plant or bubs is used to treat diabetes. The powder of the herb, mixed with honey, is very effective. Seeds can also be used in the similar manner as flowers.

Some marketed Antidiabetic Polyherbal Formulations93

Name Company Ingredients

Diabecon Himalaya

Gymnema sylvestre, Pterocarpus marsupium, Glycyrrhiza glabra, Casearia esculenta, Syzygium cumini, Asparagus racemosus, Boerhavia diffusa, Sphaeranthus indicus, Tinospora cordifolia,

Swertia chirata, Tribulus terrestris, Phyllanthus amarus, Gmelina arborea, Gossypium herbaceum, Berberis aristata, Aloe vera, Triphala, Commiphora wightii, shilajeet, Momordica

charantia, Piper nigrum, Ocimum sanctum, Abutilon indicum, Curcuma longa, Rumex maritimus.

Diasulin Tobbest Busindo

Cassia auriculata, Coccinia indica, Curcuma longa, Emblica officinalis, Gymnema sylvestre, Momordica charantia, Scoparia dulcis, Syzygium cumini, Tinospora cordifolia, Trigonella

foenum graecum.

Bitter gourd

Powder

Garry and Sun natural remedies

Momordica charantia

Dia-care Admark Herbals Limited Sanjeevan Mool; Himej, Jambu beej, Kadu, Namejav, Neem chal.

Diabetes-Daily Care

Nature’s Health Supply

Alpha Lipoic Acid, Cinnamon 4% Extract, Chromax, Vanadium, Fenugreek 50% extract, Gymnema sylvestre 25% extract Momordica charantia 7% extract, Licorice Root

20% extract

Gurmar powder

Garry and Sun natural Remedies Gymnema sylvestre

Epinsulin Swastik Formulations Pterocarpus marsupium

Diabecure Nature beaute sante Juglans regia, Berberis vulgaris, Erytherea centaurium, Millefolium, Taraxacum

Diabeta Ayurvedic cure

Ayurvedic Herbal Health Products

Gymnema sylvestre, Vinca rosea , Curcuma longa , Azadirachta indica , Pterocarpus marsupium , Momordica charantia, Syzygium cumini , Acacia arabica , Tinospora cordifolia ,

Zingiber officinale

Syndrex Plethico Laboretaries

Germinated Fenugreek seed extract

CONCLUSION Diabetes mellitus is the most common endocrine disorder, affecting more than 300 million people worldwide. For this, therapies developed along the principles of western medicine (allopathic) are

often limited in efficacy, carry the risk of adverse effects & are often too costly, especially for the developing world. Therefore, treating diabetes mellitus with plant derived compounds which are accessible & do not require laborious



pharmaceutical synthesis seems highly attractive. All the herbal drugs discussed in the review exhibit significant clinical & pharmacological activity. The potency of herbal drugs is significant & they have negligible side effects than the synthetic anti diabetic drugs. In this review article an attempt has been made to focus on hypoglycemic plants & maybe useful to the health professionals, scientists and scholars working in the field of pharmacology & therapeutics to develop evidence based alternative medicine to cure different kinds of diabetes in man & animals. Isolation & identification of active constituents from these plants, preparation of standardized dose & dosage regimen can play a significant role in improving the hypoglycemic action. REFERENCES

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