Doctor s Best Astaxanthin is an antioxidant that supports healthy blood flow and vessel integrity promotes a healthy integrated immune response and supports memory and other brain functions. Astaxanthin also enhances vision and relieves eye fatigue. Astaxanthin has beneficial effects on cell membranes that manage important life functions. The body cannot make astaxanthin it must be consumed either through diet or supplementation. Astaxanthin is made by algae and moves up the food chain when the algae are consumed as food. It gives the red color to seafood such as salmon trout crab shrimp lobster and krill but these sources of astaxanthin are not common in most diets. Doctor s Best is pleased to offer this nutrient in its natural form as a concentrate from the microalga Haematococcus pluvialis.