Actually, the theoretical science behind enteric coating of EFAs is pretty sound. As you said, an enteric coating prevents the dispersion of the capsule’s contents until it has entered the small intestine (e.g. it doesn’t dissolve in the stomach). The primary advantage to this is that the fatty acid is not bombarded by hydrogen (hydronium, whatever…) ions by the low-pH environment of the stomach. These hydrogen ions are reduction agents which can cause the loss of valuable unsaturated bonding within the molecule.
Unlike the stomach, the intestinal tract has an inherently neutral (or high, if above the duodenum) pH. Hence, by enteric coating, your EFA capsule bypasses some of the agents which may decrease the healthfulness of the acid. Unlike the yummy fats from cheeseburger, bundt cake, or Skippy, EFAs actually have something to lose by being exposed to low pH. It isn’t an absorption issue, but rather a matter of maintaining supplement integrity throughout the digestive process.
Thanks to many studies that have been done with non-enteric coated EFA supplmentation, we have seen that most will certainly reaps benefits from a capsule that is coated normally. Honestly, I haven’t seen a lot of studies done on enteric-coated fish oil caps. Therefore, it isn’t really possible for me to advocate taking one over the other in terms of cost effectiveness. I use the regular stuff from Sam’s Club, and my hormone and lipoprotein panels have since improved, and that is even at the unripe age of 23.
Just take your EFAs. I would stick with the less expensive stuff (non-enteric), so long as it has a reputable assay. Just let me know if you have any follow-ups or comments. I’d kinda be surprised if you did not, as I have been awake for almost 22 hours straight, and I’m likely losing coherent reason. This reply would not have even been possible without my good buddy Spike. Thanks Biotest!