⚠️ Mechanism
Saw Palmetto is a weak inhibitor of CYP3A4, which decreases metabolism of CYP3A4 substrates, potentially increasing their plasma concentrations and risk of adverse effects.
📋 Effect
Increased plasma levels of salmeterol (beta2-agonists), potentially leading to toxicity or enhanced adverse effects.
💊 Management
Monitor for increased adverse effects of salmeterol. Dose reduction may be necessary. Consider alternative supplement or consult healthcare provider.
Plain Language Summary
This combination carries a moderate risk of increasing the side effects of your medication. Saw Palmetto can slow down how your body breaks down beta-2 agonists, which may lead to higher levels of the drug in your bloodstream.
Source
Flockhart CYP450 Table (drug-interactions.medicine.iu.edu)
Supporting Research
Serenoa repens for benign prostatic hyperplasia
Serenoa repens for benign prostatic hyperplasia
Non-hormonal treatment for male infertility: the potential role of Serenoa repens, selenium and lycopene
Comparison of Serenoa repens With Tamsulosin in the Treatment of Benign Prostatic Hyperplasia: A Systematic Review and Meta-Analysis
Effects of dietary supplements on androgenetic alopecia: a systematic review and network meta-analysis
Benign prostate hyperplasia and nutrition
American palm ethnomedicine: a meta-analysis
Benign prostatic hyperplasia and male lower urinary tract symptoms (LUTS)
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.