Can Fish Oil Supplements Make You Gassy?

Can Fish Oil Supplements Make You Gassy? Digestive issues are some of the most common side effects of omega-3 supplements, specifically indigestion, heartburn, diarrhea, nausea, and flatulence. Do fish oil capsules cause bloating? The most common side effects, which 1% to 10% of people have, include belching, indigestion, nausea, bloating, belly pain, constipation, diarrhea, gas,