High-quality EPA/DHA supplements are often monoglycerols rather than triglycerides, and the nature of the other fatty acids can be a concern.

“I've always assumed that the high-quality epa DHA supplements were try a solace right almost none of them are there mostly mono glycerols but it's glycerol with two other fatty acids plus one omega-3 fatty acid and what are those other fatty acids if nothing else their calories that you may or may not need or their a harmful fatty acid”