Omega-3 Side Effects

Heartburn or indigestion, bad breath, and diarrhea are some of the common gastrointestinal problems that may occur as side effects of omega-3 fatty acids. These can often be eliminated by keeping any fish oil products in the freezer. Potentially serious reactions that should be reported to a healthcare provider right away include high blood sugar, signs of bleeding, and allergic reactions.

Omega-3 Supplements

Does Omega-3 Cause Side Effects?

A normal dietary intake of omega-3 fatty acids (that is, through food) is probably free of significant side effects. However, even though they are "natural" products, omega-3 supplements may cause problems. For most people, these side effects are merely bothersome. However, potentially serious reactions are possible, especially when taken at higher dosages, which is often necessary in order to obtain some of the omega-3 benefits.

(This article covers many, but not all, of the possible side effects of omega-3 fatty acids. Your healthcare provider can discuss a more complete list of omega-3 side effects with you.)

Bothersome Side Effects of Omega-3

Many omega-3 fatty acid supplements are

fish oil products, and these may cause gastrointestinal side effects. Some people find that keeping their supplements in the freezer helps reduce many of these problems. These possible side effects include:

Bad breath
A fishy aftertaste
Heartburn or indigestion
Nausea
Diarrhea.

Another popular source of omega-3 is flaxseed and flaxseed oil, which may cause the following:

Bloating
Gas
Abdominal pain (stomach pain)
Diarrhea or loose stools
Constipation (if you take it without enough water)
Indigestion or heartburn
Nausea.

(Omega-3 Side Effects Continued: Page 2)