Solaray Astaxanthin comes from natural source Haematococcus pluvialis. Astaanthin is intended to provide nutritive support for healthy skin and immune function, healthy energy levels, joint health and function, and it is also intended to aid in supporting the body in recovery from exercise. This product offers the clinically tested 4 mg serving size of natural Astaxanthin from Haematococcus microalgae in each softgel.