Astaxanthin is a phytochemincal in the class of Xanthophylls, belonging to the group of Carotenoids (tetraterpenoids), found abundantly in yeast, krill, shrimp, salmon, lobsters, etc. Health Benefits 1. Male infertility In the investigation of the effects of Astaxanthin 16 mg/day (AstaCarox, AstaReal AB, Gustavsberg, Sweden) or placebo for 3 months treatment on semen parameters, reactive …