PRN omega-3 products contain both a high amount of DHA and EPA. At PRN, their omega-3 products are in the triglyceride form. Many other fish oil products are low quality, unpurified, or are sold in a synthetic, ethyl ester form. This form, which is more difficult to absorb, can leave a fishy odor or after-taste. It could take up to 40 synthetic capsules to equal the same benefits found in just four capsules of PRN’s products.