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Astaxanthin: Astaxanthin may be found in microalgae, yeast, salmon, trout, krill, shrimp, crayfish, crustaceans, and the feathers of some birds. Astaxanthin may have positive effects on muscle strength, but better-quality studies are needed before a conclusion can be made.Avoid if allergic or hypersensitive to astaxanthin or related carotenoids, including canthaxanthin. Use cautiously if taking 5-alpha-reductase inhibitors, hypertensive agents, asthma medications, drugs that are broken down by the liver, menopause agents, birth control pills, immunosuppressants, or with drugs used to treat Helicobacter pylori infections. Use cautiously with high blood pressure, parathyroid disorders, or osteoporosis. Avoid with hormone-sensitive conditions or immune system disorders. Avoid with previous experience of visual changes while taking astaxanthin and with low eosinophil levels. Avoid if pregnant or breastfeeding.Natural Standard Monograph, Copyright © 2008 (www. Read more
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