NSTK · 01.2026Independent supplement reference
NutriStack
Edition 1.0Updated August 1, 2026

Supplement × Prescription·Evidence index

Fish Oil and Simvastatin: what the published research says

PubMed indexes 6 records that name Fish Oil and Simvastatin together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.

Read this first

An evidence index, not guidance.

Every statement below is attributed to a named, dated, linked source.

This page lists published research relevant to Fish Oil and Simvastatin. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.

The research

6 studies naming Fish Oil and Simvastatin.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

Therapy of post-renal transplantation hyperlipidaemia: comparative study with simvastatin and fish oil.

Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 1997 · PMID 9351079

Clinical TrialComparative StudyRandomized Controlled Trial

“We concluded that low-dose simvastatin and fish oil are both effective and safe in correcting post-RT hyperlipidaemia. Further prospective studies with larger follow-up are needed to clarify whether this therapy has an impact on cardiovascular morbidity and mortality in RT patients.”

Castro et al. · Authors' conclusion

Names both Fish Oil and Simvastatin in its title.

Vitamin D was Superior to Omega-3 as a Simvastatin Adjuvant in Improving Blood Lipids and Atherogenic Index in Type-I Dyslipidemic Rats.

Turkish journal of pharmaceutical sciences · 2024 · PMID 38256280

“We concluded that high-dose vitamin D as an adjuvant to simvastatin therapy was superior to omega-3 in improving TG, HDL, and AIP levels. High-dose vitamin D also improved ALT levels in type-I dyslipidemic rats. This result may be translated in clinics to reduce the risk of coronary syndrome in patients with type-I dyslipidemia.”

Lianto et al. · Authors' conclusion

Names both Fish Oil and Simvastatin in its title.

Comparison table: Some lipid-lowering drugs.

The Medical letter on drugs and therapeutics · 2019 · PMID 30845107

Comparative StudyHuman subjects

Names Fish Oil and Simvastatin together in an interaction, co-administration, or pharmacokinetic context.

Effects of diet and simvastatin on serum lipids, insulin, and antioxidants in hypercholesterolemic men: a randomized controlled trial.

JAMA · 2002 · PMID 11829698

Clinical TrialRandomized Controlled Trial

“A modified Mediterranean-type diet rich in omega-3 fatty acids efficiently potentiated the cholesterol-lowering effect of simvastatin, counteracted the fasting insulin-elevating effect of simvastatin, and, unlike simvastatin, did not decrease serum levels of beta-carotene and ubiquinol-10.”

Jula et al. · Authors' conclusion

Names Fish Oil and Simvastatin together in an interaction, co-administration, or pharmacokinetic context.

Limitations

What this evidence cannot tell you.

Search-based evidence indexes have real limits, and it is worth being explicit about them:

NutriStack

Track what you actually take.

NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Fish Oil, Simvastatin, and several hundred other substances.

The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.

NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.