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Milk Thistle × Sirolimus

MODERATE INTERACTION — Probable Evidence

⚠️ Mechanism

Milk thistle inhibits CYP3A4 and P-gp, potentially increasing sirolimus levels.

📋 Effect

Increased sirolimus levels; potential toxicity

💊 Management

Monitor sirolimus levels closely. May need dose reduction.

Plain Language Summary

This combination carries a moderate risk because milk thistle can cause sirolimus levels to rise in your body. These higher levels may lead to increased side effects or toxicity.

Source

Mills E et al. Pharmacotherapy 2005; DiCenzo R et al. J Clin Pharmacol 2003

Supporting Research

Evaluation of the effect of herbal agents as management of radiodermatitis in breast cancer patients: A systematic review and meta-analysis PMID:37816677 DOI:10.1111/jjns.12559 2024
Efficacy of different interventions for nonalcoholic fatty liver disease: A meta-analysis of lifestyle modifications, silymarin, and medications PMID:40738719 DOI:10.6133/apjcn.202508_34(4).0003 2025
Pharmacotherapy for trichotillomania PMID:34582562 DOI:10.1002/14651858.CD007662.pub3 2021
Efficacy of traditional Chinese medicine combined with Silibinin on nonalcoholic fatty liver disease: A meta-analysis and systematic review PMID:38306552 DOI:10.1097/MD.0000000000037052 2024
Are alterations needed in Silybum marianum (Silymarin) administration practices? A novel outlook and meta-analysis on randomized trials targeting liver injury PMID:40221681 DOI:10.1186/s12906-025-04886-y 2025
The therapeutic effects of silymarin for patients with glucose/lipid metabolic dysfunction: A meta-analysis PMID:33019400 DOI:10.1097/MD.0000000000022249 2020
The therapeutic effect of silymarin in the treatment of nonalcoholic fatty disease: A meta-analysis (PRISMA) of randomized control trials PMID:29245314 DOI:10.1097/MD.0000000000009061 2017
Prevention and management of idiosyncratic drug-induced liver injury: Systematic review and meta-analysis of randomised clinical trials PMID:33359912 DOI:10.1016/j.phrs.2020.105404 2021
Medical Disclaimer: This interaction record is for informational and educational purposes only and does not constitute medical advice. Drug-supplement interactions can be dangerous. Always consult your healthcare provider or pharmacist before combining any supplement with prescription medications. Do not stop or change any medication without professional guidance.