I have been taking opti3 since almost 7 years. I am a food scientist and can testify that the science behind the benefits of DHA+EPA supplementation is strong. I am a vegetarian, and feel uneasy about killing fish to give my brain, eyes and inflammation markers a boost. The solution is of course opti3, which is both economically and ecologically a great option. Their great customer service has always answered my questions promptly. I was happy to find out from them that they use no chemical solvents to extract the oil from the algae, so one can be sure there are no nasty residues in the product. I can also testify that their deliveries to Germany arrive quickly and in perfect condition. As a food chemist, I highly recommend opti3!