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Vitamin D × Verapamil

MINOR INTERACTION — Theoretical Evidence

⚠️ Mechanism

Vitamin D promotes calcium absorption, which may counteract verapamil's calcium channel blocking effect.

📋 Effect

Possible reduced verapamil efficacy at very high vitamin D doses

💊 Management

Moderate vitamin D intake is safe. Avoid extreme doses without monitoring.

Plain Language Summary

This interaction is considered minor and is generally safe with moderate Vitamin D intake. However, taking extremely high doses of Vitamin D could potentially reduce the effectiveness of Verapamil.

Source

Theoretical based on calcium-channel mechanism

Supporting Research

Interventions for preventing falls in older people in care facilities and hospitals PMID:30191554 DOI:10.1002/14651858.CD005465.pub4 2018
High prevalence of vitamin D deficiency in Asia: A systematic review and meta-analysis PMID:34783278 DOI:10.1080/10408398.2021.1990850 2023
The effect of vitamin D supplementation on depressive symptoms in adults: A systematic review and meta-analysis of randomized controlled trials PMID:35816192 DOI:10.1080/10408398.2022.2096560 2023
Interventions for preventing falls in older people living in the community PMID:19370674 DOI:10.1002/14651858.CD007146.pub2 2009
Interventions for preventing falls in older people in nursing care facilities and hospitals PMID:20091578 DOI:10.1002/14651858.CD005465.pub2 2010
Interventions for preventing falls in older people living in the community PMID:22972103 DOI:10.1002/14651858.CD007146.pub3 2012
Interventions for preventing falls in older people in care facilities and hospitals PMID:23235623 DOI:10.1002/14651858.CD005465.pub3 2012
Interventions for preventing falls in older people in care facilities PMID:40832852 DOI:10.1002/14651858.CD016064 2025
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.