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MACUSHIELD
 | Description: Macushield™ capsules of Douglas Laboratories® provide a multi-vitamin and mineral formulation with several key nutrients, including vitamin A, beta- carotene, bilberry extract, L-taurine, L-glutathione, and zinc that are important in maintaining normal eye function. Size: 180 | Price: $35.00 |
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Functions:
More than any other tissue in the body, the ocular lens and retina are continually exposed to oxygen and intense light radiation. Both light and oxygen can create free radicals that play havoc with membrane lipids of visual cells. Experts believe that the uncontrolled generation of free radicals in the eyes can ultimately lead to macular degeneration and cataracts. Therefore, ocular tissue relies on a strong antioxidant defense system to protect them from free radical damage. Extracts of bilberry and Ginkgo biloba, green tea, rutin, quercetin, and hesperidin are a rich source of flavonoids that provide potent antioxidant defense in retinal visual cells and help maintain healthy vascularization in ocular tissue. Glutathione and selenium are essential components for healthy activity of the antioxidant enzyme glutathione peroxidase which is abundant in healthy eyes. Glutathione peroxidase levels, however, decline with advancing age, and an adequate dietary supply of glutathione, its precursor N-acetyl-L-cysteine, and selenium may help maintain healthy levels of this important enzyme. Beta-carotene serves at least two purposes for the eyes. It is a valuable precursor for vitamin A which functions in the retinal cells as a light receptor. Beta- carotene, as well as other carotenoids in Macushield, such as lutein and lycopene, are also important antioxidants in the lens and retina. Zinc is not only essential for normal visual signal transduction in the retina, but also is part of many of the enzymes involved in vitamin A dependent light reactions in retinal cells. Moreover, zinc, as well as copper and manganese, are essential cofactors of superoxide dismutase, an antioxidant enzyme that removes potentially dangerous superoxide radicals in the visual cells, the lens, and other tissues. Taurine, the most abundant free amino acid in ocular tissue, is thought to help stabilize neural membranes in retinal cells and modulate photoreceptor activity.
Indications:
Macushield capsules may be a useful dietary supplement for those who wish to increase their intake of nutrients that may support the healthy functioning of their vision.
Formula:
Six Capsules Contain: Vitamin A ..............................................15,000 I.U. (33% as Vitamin A Palmitate/67% as Beta- Carotene from Dunaliella salina, a natural source, providing Beta-Carotene, 90 mcg, Alpha Carotene, 18 mcg, Zeaxanthin, 22 mcg, Cryptoxanthin and Lutein. Vitamin C ...................................................500 mg Vitamin E ....................................................200 I.U. (as d-alpha-tocopheryl succinate) Thiamin (as Thiamin HCl) ............................25 mg Riboflavin (as Riboflavin HCl) ....................25 mg Niacin/Niacinamide ......................................60 mg Vitamin B-6 (as Pyridoxine HCl) .................25 mg Folic Acid ...................................................200 mcg Vitamin B-12 ..............................................100 mcg Pantothenic Acid .........................................100 mg Calcium (from Calcium Citrate) .................100 mg Magnesium (from Magnesium Citrate) ......200 mg Zinc (from Zinc Picolinate) ..........................20 mg Selenium (as Selenomethionine) ................200 mcg Copper (from Copper Sebecate) .....................3 mg Manganese ......................................................3 mg L-Taurine ....................................................400 mg Quercetin Bioflavonoid ................................50 mg N-Acetyl-L-Cysteine ..................................200 mg Bilberry Extract ............................................40 mg (continued on reverse) Product Data Douglas Laboratories ® Ginkgo biloba Extract ...................................40 mg L-Glutathione (reduced) ...............................25 mg Green Tea ......................................................50 mg Rutin ..............................................................15 mg Hesperidin......................................................10 mg Lycopene (from Lycopene Complex) .............1 mg Lutein (from Lutein Complex) .....................10 mg
Suggested usage:
Adults take 6 capsules daily or as directed by physician.
Warnings/Side effects:
No adverse effects have been reported.
Storage:
Store in a cool, dry place, away from direct light. Keep out of reach of children.
References:
Amemiya, T. The eye and nutrition. Jpn J Ophthalmol 2000;44:320. Anonymous. The age-related eye disease study: a clinical trial of zinc and antioxidants-age-related eye disease study report no. 2. J Nutr 2000;130:1516S-9S. Bron, AJ, Vrensen, GF, Koretz, J, Maraini, G, Harding, JJ. The ageing lens. Ophthalmologica 2000;214:86-104. Cai, J, Nelson, KC, Wu, M, Sternberg, P, Jr., Jones, DP. Oxidative damage and protection of the RPE. Prog Retin Eye Res 2000;19:205-21. Cejkova, J, Stipek, S, Crkovska, J, Ardan, T. Changes of superoxide dismutase, catalase and glutathione peroxidase in the corneal epithelium after UVB rays. Histochemical and biochemical study [In Process Citation]. Histol Histopathol 2000;15:1043-50. Chung, HS, Harris, A, Kristinsson, JK, Ciulla, TA, Kagemann, C, Ritch, R. Ginkgo biloba extract increases ocular blood flow velocity. J Ocul Pharmacol Ther 1999;15:233-40. Giblin, FJ. Glutathione: a vital lens antioxidant. J Ocul Pharmacol Ther 2000;16:121-35. Huster, D, Reichenbach, A, Reichelt, W. The glutathione content of retinal Muller (glial) cells: effect of pathological conditions. Neurochem Int 2000;36:461-9. Muth, ER, Laurent, JM, Jasper, P. The effect of bilberry nutritional supplementation on night visual acuity and contrast sensitivity. Altern Med Rev 2000;5:164-73. Ranchon, I, Gorrand, JM, Cluzel, J, Droy-Lefaix, MT, Doly, M. Functional protection of photoreceptors from light-induced damage by dimethylthiourea and Ginkgo biloba extract. Invest Ophthalmol Vis Sci 1999;40:1191-9.
Information:
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Manufactured:
Manufactured by Douglas Laboratories 600 Boyce Road Pittsburgh, PA 15205 800-245-4440
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The information provided on this site is for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional or any information contained on or in any product label or packaging. The products and the claims made about specific products on or through this site have not been evaluated by the United States Food and Drug Administration and are not approved to diagnose, treat, cure or prevent disease. You should consult with a healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem. Information about each product is taken from the labels of the products or from the manufacturer's advertising material. we are not responsible for any statements or claims that various manufacturers make about their products. We cannot be held responsible for typographical errors or product formulation changes.