Fish Oil Supplements: Benefits, Risks & Side Effects - Mayo Clinic

According to the Mayo Clinic, fish oil is rich in omega-3 fatty acids. Fatty acids can play a major role in brain function and growth and development. For best results, fish oil pills should supplement regular exercise and a healthy diet. Medical research indicates that fish oil supplements could improve overall health and prevent heart disease, Alzheimer's disease and depression.

Side Effects

• Severe side effects include flu-like symptoms, chest pain, body aches, chills and irregular heartbeats. Other side effects include back pain, undesired taste in the mouth, mild skin rash and upset stomach.

Allergies

• Seek medical attention if you experience allergic reactions to fish oil supplements. Symptoms may include hives, trouble breathing, or swelling in the face, throat, lips or tongue.

Drug Interactions

• Fish oil supplements may interact with certain estrogen medications, water pills, beta-blockers and blood thinners. Consult your doctor before use.

Proper Use

• Fish oil pills are most effective when taken with food. Never take fish oil pills for longer that advised or in larger amounts than recommended.

Warning

• Never open or puncture fish oil pill--swallow the entire capsule. Avoid drinking alcohol and eating high-cholesterol foods when taking fish oil supplements.