Some minor fish oil side effects include burping and a fishy aftertaste. These minor annoyances can be avoided a couple ways. The first is to purchase a pharmaceutical grade fish oil, these capsules are molecularly distilled and can remove many of the additives that cause these issues. That doesn’t do you much good if you’ve already bought some fish oil though and would like to continue taking it. A second easy remedy is to freeze your fish oil supplements. This obviously will only work for those taking capsules, not the liquid variety but is a safe and effective way to prevent burping. Make sure to check the manufacturer label first though as some supplement casings may not do well frozen. If that is the case, refrigeration may help somewhat.

If you are currently taking a liquid supplement, switching to capsule form may also help with burping and especially fishy aftertaste. The capsules break down more slowly than their liquid counterpart. A final suggestion is to take your supplement with food. Taking fish oil on an empty stomach can make the problem worse. Taking them with food helps with digestion and burping.