What are the correct dosage levels for astaxanthin?
To date, no one has declared an upper limit to how much astaxanthin dosage the body can take. Astaxanthin is not a drug, remember, but something that occurs naturally in foods that have been eaten for millennia.
In various human clinical studies using astaxanthin to discover its effect on various health conditions, dosage has ranged from 1.8 mg-100 mg per day,1 administered from a single dose up to daily dosing for a year.
Cyanotech, the maker of BioAstin brand astaxanthin, generally recommends an astaxanthin dose of 4-8 mg per day. Since astaxanthin accumulates in one’s system, its benefits are enhanced by taking it regularly. Cyanotech also suggests that those who have specific health issues may want to start at higher doses for a few weeks, then taper off.
For instance, someone with arthritis, tendonitis or Carpal Tunnel Syndrome might start with an astaxanthin dose of 12 mg a day, whereas someone who is taking astaxanthin just for its antioxidant value or to enhance his or her immune system might begin with a dose of 4 mg a day.
Another producer, Valensa (Zanthin brand) suggests that 4 mg daily is an ideal astaxanthin dose, especially for athletes under heavy oxidative stress, or for people exposed to excessive sunlight, or people like pilots who are exposed to high levels of ionizing radiation. For others, 2-4 mg is adequate. The company's founder, Dr. Rudi E. Moerck, also suggests that taking 10 mg every day may lead to pigmentation of the skin, as sometimes happens to people who drink excessive amounts of carrot juice, a source of the carotenoid beta-carotene.
As mentioned elsewhere, astaxanthin is a component of krill oil, as well. Depending on the brand of krill oil, the range of astaxanthin per recommended dose of krill oil runs anywhere from 40 micrograms per dose to 12 milligrams per dose.
1. Fassett, Robert G., et al. Astaxanthin: A Potential Therapeutic Agent in Cardiovasular Disease. Marine Drugs Review, 2011, 9, 447-465; doi:10.3390/md9030447.