Astaxanthin is found in microalgae, yeast, salmon, trout, krill, shrimp, crayfish, crustaceans, and the feathers of some birds. Astaxanthin has been suggested as a possible treatment for rheumatoid arthritis. However, further research is warranted.
Avoid if allergic or hypersensitive to astaxanthin or related carotenoids, including canthaxanthin or an astaxanthin algal source. 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, or Helicobacter pylori agents. Use cautiously with high blood pressure, parathyroid disorders, or osteoporosis. Avoid with hormone-sensitive conditions, immune disorders, or if taking immunosuppressive therapies. Avoid with previous experience of visual changes while taking astaxanthin and with low eosinophil levels. Avoid if pregnant or breastfeeding.
Copyright 2007 Natural Standard, Inc.
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