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Omega-3 Fish Oil Side Effects & Safety

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Generally Safe

Potential Side Effects

  • Fishy aftertaste or burping (reduced with enteric-coated capsules or taking with meals)
  • Mild gastrointestinal discomfort (nausea, diarrhea) at higher doses
  • Potential for increased bleeding time at very high doses (>4g/day)
  • Rare: rash or allergic reaction in fish-allergic individuals

Drug & Supplement Interactions

  • Anticoagulants (warfarin, aspirin) — may increase bleeding risk at high doses; monitor INR
  • Blood pressure medications — additive hypotensive effect possible
  • Orlistat — may reduce omega-3 absorption; separate doses by 2 hours

Maximum Dose

Do not exceed: Up to 5g/day EPA+DHA is considered safe by EFSA; FDA has approved 4g/day prescription formulations

Full Omega-3 Fish Oil Guide

References

  1. (). Almond consumption and cardiovascular risk factors: a systematic review and meta-analysis of randomized controlled trials. Advances in Nutrition. DOI
  2. (). Cardiovascular risk reduction with icosapent ethyl for hypertriglyceridemia. New England Journal of Medicine. DOI
  3. (). Omega-3 fatty acids and inflammatory processes: from molecules to man. Biochemical Society Transactions. DOI