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Active Hydrogen Adrenal Extracts Alanine Alpha-Linolenic Acid Alpha-Lipoic Acid AMP Amylase Inhibitors Arginine Bee Pollen Beta Carotene Beta-glucan Betaine Beta-Sitosterol Biotin Borage Oil Boron Bovine Cartilage Bovine Colostrum Brewer's Yeast Bromelain Calcium Capsaicin Carnitine Carnosine Chitosan Chloride Chlorophyll Chondroitin Chromium CLA Cobalt Coenzyme Q10 Copper Creatine Cysteine DHA DHEA DMAE EGCG Evening Primrose Oil 5-HTP Fiber (Insoluble) Fiber (Soluble) Fish Oil Flavonoids Fluoride Folate Fumaric Acid GABA Gamma-Linolenic Acid Glucomannan Glucosamine Glutamic Acid Glutamine Glutathione Glycine Grape Seed Extract Histidine HMB Hydroxycitric Acid Indole Inosine Inositol Iodine Ipriflavone Iron Isoleucine Lactase Lecithin Leucine Lipase Lutein Lycopene Lysine Magnesium Malic Acid Manganese Mannose Melatonin Methionine Methoxyisoflavone Molybdenum MSM N-Acetyl Cysteine NADH Naringin Niacin Octacosanol Oligosaccharides Olive Leaf Extract Ornithine Oryzanol PABA Pancreatic Enzymes Pantothenic Acid Phenylalanine Phosphatidylserine Phosphorus Phytic Acid Policosanol Potassium Pregnenolone Probiotics Propolis Psyllium Pyridoxine Pyruvate Quercetin Resveratrol Retinol Riboflavin Ribose Royal Jelly SAMe Selenium Shark Cartilage Silicon Sodium Spirulina Spleen Extracts St. John's Wort Strontium Sulforaphane Sulfur Taurine Thiamine Tocopherol Tea Tree Oil Tyrosine Usnic Acid Valine Vanadium Vinpocetine Vitamin A Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Vitamin B9 Vitamin B12 Vitamin C Vitamin D Vitamin H Vitamin K Whey Protein Xylitol Zinc
Abalone Shell (shi jue ming)
Abutilon Seed (dong kui zi)
Acanthopanax Bark (wu jia pi)
Achyranthes (niu xi)
Aconite (fu zi)
Acorus (shi chang pu)
Adenophora Root (nan sha shen)
Agkistrodon (bai hua she)
Agrimony (xian he cao)
Ailanthus Bark (chun pi)
Akebia Fruit (ba yue zha)
Albizzia Bark (he huan pi)
Albizzia Flower (he huan hua)
Alfalfa (medicago sativa)
Alisma (ze xie)
Aloe (lu hui)
Alum (bai fan)
Amber (hu po)
Ampelopsis (bai lian)
Andrographis (chuan xin lian)
Anemarrhena (zhi mu)
Antelope's Horn (ling yang jiao)
Apricot Seed (xing ren)
Areca Peel (da fu pi)
Areca Seed (bing lang)
Arisaema (tian nan xing)
Ark Shell (wa leng zi)
Arnebia (zi cao or ying zi cao)
Arnica (arnica montana)
Artichoke Leaves (Cynara scolymus)
Ash bark (qin pi)
Ashwagandha (withania somniferum)
Aster (zi wan)
Astragalus (huang qi)
Aurantium (zhi ke [qiao])
Bamboo Juice (zhu li)
Bamboo Shavings (zhu ru)
Belamcanda Rhizome (she gan)
Benincasa Peel (dong gua pi)
Benincasa Seed (dong gua xi/ren)
Benzoin (an xi xiang)
Bilberry (yue ju)
Biota Leaf (ce bai ye)
Biota Seed (bai zi ren)
Bitter Melon (ku gua)
Bitter Orange Peel (ju hong)
Black Cohosh (sheng ma)
Black Plum (wu mei)
Black Sesame Seed (hei zhi ma)
Bletilla (bai ji)
Boneset (ze lan)
Borax (peng sha)
Borneol (bing pian)
Bottle Brush (mu zei)
Buddleia (mi meng hua)
Buffalo Horn (shui niu jiao)
Bulrush (pu huang)
Bupleurum (chai hu)
Burdock (niu bang zi)
Camphor (zhang nao)
Capillaris (yin chen hao)
Cardamon Seed (sha ren)
Carpesium (he shi)
Cassia Seed (jue ming zi)
Catechu (er cha)
Cat's Claw (uncaria tomentosa)
Cephalanoplos (xiao ji)
Celosia Seed (qing xiang zi)
Centipede (wu gong)
Chaenomeles Fruit(mu gua)
Chalcanthite (dan fan)
Chebula Fruit (he zi)
Chinese Gall (wu bei zi)
Chinese Raspberry (fu pen zi)
Chrysanthemum (ju hua)
Cibotium (gou ji)
Cinnabar (zhu sha)
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Clam Shell (hai ge ke/qiao)
Clematis (wei ling xian)
Cloves (ding xiang)
Cnidium Seed (she chuang zi)
Codonopsis (dang shen)
Coix Seed (yi yi ren)
Coptis (huang lian)
Cordyceps (dong chong)
Coriander (hu sui)
Corn Silk (yu mi xu)
Cornus (shan zhu yu)
Corydalis (yan hu suo)
Costus (mu xiang)
Cranberry (vaccinium macrocarpon)
Cremastra (shan ci gu)
Croton Seed (ba dou)
Curculigo (xian mao)
Cuscuta (tu si zi)
Cuttlefish Bone (hai piao xiao)
Cymbopogon (xiang mao)
Cynanchum (bai qian)
Cynomorium (suo yang)
Cyperus (xiang fu)
Dalbergia (jiang xiang)
Damiana (turnera diffusa)
Dandelion (pu gong ying)
Deer Antler (lu rong)
Dendrobium (shi hu)
Devil's Claw (harpagophytum procumbens)
Dianthus (qu mai)
Dichroa Root (chang shan)
Dittany Bark (bai xian pi)
Dong Quai (tang kuei)
Dragon Bone (long gu)
Dragon's Blood (xue jie)
Drynaria (gu sui bu)
Dryopteris (guan zhong)
Earthworm (di long)
Eclipta (han lian cao)
Elder (sambucus nigra or sambucus canadensis)
Elsholtzia (xiang ru)
Ephedra (ma huang)
Epimedium (yin yang huo)
Erythrina Bark (hai tong pi)
Eucalyptus (eucalyptus globulus)
Eucommia Bark (du zhong)
Eupatorium (pei lan)
Euphorbia Root (gan sui or kan sui)
Euryale Seed (qian shi)
Evodia (wu zhu yu)
Fennel (xiao hui xiang)
Fenugreek (hu lu ba)
Fermented Soybeans (dan dou chi)
Flaxseed (ya ma zi)
Fo Ti (he shou wu)
Forsythia (lian qiao)
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Green Tea (lu cha)
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Hemp Seed (huo ma ren)
Homalomena (qian nian jian)
Honey (feng mi)
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Isatis Leaf (da qing ye)
Isatis Root (ban lan gen)
Java Brucea (ya dan zi)
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Kadsura Stem (hai feng teng)
Katsumadai Seed (cao dou kou)
Kelp (kun bu)
Knotweed (bian xu)
Knoxia root (hong da ji)
Kochia (di fu zi)
Lapis (meng shi)
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Leonorus (yi mu cao)
Lepidium Seed (ting li zi)
Licorice (gan cao)
Ligusticum (chuan xiong)
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Litsea (bi cheng qie)
Lobelia (ban bian lian)
Longan (long yan hua [rou])
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Lotus Seed (lian zi)
Lotus Stamen (lian xu)
Luffa (si gua luo)
Lycium Bark (di gu pi)
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Lygodium (hai jin sha)
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Magnetite (ci shi)
Magnolia Bark (hou po)
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Maitake (grifola frondosa)
Marigold (c. officinalis)
Massa Fermentata (shen qu)
Milk Thistle (silybum marianum)
Millettia (ji xue teng)
Mint (bo he)
Mirabilite (mang xiao)
Morinda Root (ba ji tian)
Mugwort Leaf (ai ye)
Mulberry Bark (sang bai pi)
Mulberry Leaf (sang ye)
Mulberry Twig (sang zhi)
Mullein (jia yan ye)
Musk (she xiang)
Myrrh (mo yao)
Notoginseng (san qi)
Notopterygium (qiang huo)
Nutmeg (rou dou kou)
Oldenlandia (bai hua she she cao)
Omphalia (lei wan)
Onion (yang cong)
Ophicalcite (hua rui shi)
Ophiopogon (mai dong)
Oroxylum Seed (mu hu die)
Oryza (gu ya)
Oyster Shell (mu li)
Passion Flower (passiflora incarnata)
Patrinia (bai jiang cao)
Pau D'Arco (tabebuia avellanedae)
Peach Seed (tao ren)
Pearl (zhen zhu [mu])
Perilla Leaf (su ye)
Perilla Seed (su zi)
Perilla Stem (su geng)
Persimmon (shi di)
Pharbitis Seed (qian niu zi)
Phaseolus (chi xiao dou)
Phellodendron (huang bai)
Phragmites (lu gen)
Picrorhiza (hu huang lian)
Pinellia (ban xia)
Pine Knots (song jie)
Pipe Fish (hai long)
Plantain Seed (che qian zi)
Platycodon (jie geng)
Polygala (yuan zhi)
Polygonatum (huang jing)
Polyporus (zhu ling)
Poppy Capsule (ying su qiao)
Poria (fu ling)
Prickly Ash Peel (hua jiao)
Prinsepia Seed (rui ren/zi)
Prunella (xia ku cao)
Prunus Seed (yu li ren)
Pseudostellaria (tai zi shen)
Psoralea (bu gu zhi)
Pueraria (ge gen)
Pulsatilla (bai tou weng)
Pumice (fu hai shi)
Pumpkin Seed (nan gua zi)
Purslane (ma chi xian)
Pyrite (zi ran tong)
Pyrrosia Leaf (shi wei)
Quisqualis (shi jun zi)
Radish (lai fu zi)
Realgar (xiong huang)
Red Atractylodes (cang zhu)
Red Clover (trifolium pratense)
Red Ochre (dai zhe shi)
Red Peony (chi shao)
Red Sage Root (dan shen)
Rehmannia (shu di huang)
Reishi (ling zhi)
Rhubarb (da huang)
Rice Paper Pith (tong cao)
Rose (mei gui hua)
Rosemary (mi die xiang)
Safflower (hong hua)
Saffron (fan hong hua)
Sandalwood (tan xiang)
Sanguisorba Root (di yu)
Sappan Wood (su mu)
Sargent Gloryvine (hong teng)
Saw Palmetto (ju zong lu)
Schefflera (qi ye lian)
Schisandra (wu wei zi)
Schizonepeta (jing jie)
Scirpus (san leng)
Scopolia (S. carniolica Jacq.)
Scorpion (quan xie)
Scrophularia (xuan shen)
Scutellaria (huang qin)
Sea Cucumber (hai shen)
Sea Horse (hai ma)
Seaweed (hai zao)
Selaginella (shi shang bai)
Senna (fan xie ye)
Shiitake (hua gu)
Siegesbeckia (xi xian cao)
Siler Root (fang feng)
Slippery Elm (ulmus fulva)
Smilax (tu fu ling)
Smithsonite (lu gan shi)
Sophora Flower (huai hua mi)
Sophora Root (ku shen)
Spirodela (fu ping)
Stellaria (yin chai hu)
Stemona (bai bu)
Stephania (fang ji [han])
Sweet Annie (qing hao)
Teasel Root (xu duan)
Tiger Bone (hu gu)
Torreya Seed (fei zi)
Tortoise Plastron (gui ban)
Tremella (bai mu er)
Trichosanthes Fruit (gua lou)
Trichosanthes Root (tian hua fen)
Trichosanthes Seed (gua lou ren)
Tsaoko Fruit (cao guo)
Turmeric (jiang huang)
Turtle Shell (bie jia)
Tussilago (kuan dong hua)
Urtica (xun ma)
Uva ursi (arctostaphylos uva-ursi)
Vaccaria Seed (wang bu lui xing)
Valerian (jie cao)
Veratrum (li lu)
Viola (zi hua di ding)
Vitex (man jing zi)
Walnut (hu tao ren)
Watermelon (xi gua)
White Atractylodes (bai zhu)
White Mustard Seed (bai jie ze)
White Peony (bai shao)
Wild Asparagus (tian men dong)
Windmill Palm (zong lu pi/tan)
Xanthium (cang er zi)
Zedoary (e zhu)

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Grape Seed Extract

What is grape seed extract? Why do we need it?

Grape seed extract is a nutrient that belongs to the bioflavonoid family. It is derived from the seeds and skin of grapes, which can be green, red or purple in color.

The active ingredients contained in grape seed extract are believed to act as antioxidants; studies have shown that grape seed extract supplements can raise the amount of antioxidants in the blood dramatically. These antioxidants can neutralize substances called free radicals, and may reduce (or prevent) much of the damage they cause.

Grape seed extract has proven to be valuable in the treatment of inadequate blood flow in the capillaries and veins; small studies have produced increased capillary strength using as little as 50 milligrams per day, and increased venous blood flow using 150 milligrams per day. Other studies have shown that it improves the aspects of vision in healthy people, including the prevention of age-related macular degeneration and the effects of glare from bright lights.

How much grape seed extract should I take?

There is currently no recommended daily allowance (RDA) for grape seed extract. However, an intake of between 50-100 milligrams of grape seed extract is recommended for the prevention of heart disease and circulatory problems; larger doses may be used to treat specific illnesses.

What forms of grape seed extract are available?

Grape seed extract can be found either alone or in combination with other nutrients as part of a multivitamin, multiherbal supplement. It can also be found in herbal extracts, capsules or tablets.

What can happen if I take too much grape seed extract? Are there any interactions I should be aware of? What precautions should I take?

Flavonoids in general, and the flavonoids associated with grape seeds, are considered free of side-effects. Since they are water-soluble, any excess levels of grape seed extract that are not absorbed by the body are excreted via sweat or urine. However, women who are pregnant or breastfeeding should avoid grape seed extract supplements.

As of this writing, there are no known drug interactions with grape seed extract. As always, make sure to consult with a licensed health care provider before taking grape seed extract or any other dietary supplement or herbal remedy.


References

  • Bagchi D, Bagchi M, Stohs SJ, et al. Free radicals and grape seed proanthocyanidin extract: importance in human health and disease prevention. Toxicology 2000;148(2-3):187-197.
  • Chou EJ, Keevil JG, Aeschlimann S, et al. Effect of ingestion of purple grape juice on endothelial function in patients with coronary heart disease. Am J Cardiol 2001;88(5):553-555.
  • Ernst E (ed.) The Desktop Guide to Complementary and Alternative Medicine: An Evidence-Based Approach. Edinburgh:Mosby, 2001, pp.118-119.
  • Freedman JE, Parker C III, Li L, et al. Select flavonoids and whole juice from purple grapes inhibit platelet function and enhance nitric oxide release. Circulation 2001;103(23):2792-2798.
  • Waffo-Teguo P, Hawthorne ME, Cuendet M, et al. Potential cancer-chemopreventive activities of wine stilbenoids and flavans extracted from grape (vitis vinifera) cell cultures. Nutr Cancer 2001;40(2):173-179.
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