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Zinc × Penicillamine

MODERATE INTERACTION — Well-Established Evidence

⚠️ Mechanism

Zinc reduces penicillamine absorption and vice versa.

📋 Effect

Reduced efficacy of both agents

💊 Management

Separate doses by at least 2 hours.

Plain Language Summary

This interaction is considered moderate and can affect how well your medication works. Zinc and penicillamine can prevent each other from being properly absorbed, which may reduce the effectiveness of both. Separating these doses by at least two hours can help avoid this interference.

Source

Harkness JA, Blake DR. BMJ 1982

Supporting Research

Oral zinc for treating diarrhoea in children PMID:27996088 DOI:10.1002/14651858.CD005436.pub5 2016
Zinc for the prevention or treatment of acute viral respiratory tract infections in adults: a rapid systematic review and meta-analysis of randomised controlled trials PMID:34728441 DOI:10.1136/bmjopen-2020-047474 2021
Compression bandages or stockings versus no compression for treating venous leg ulcers PMID:34308565 DOI:10.1002/14651858.CD013397.pub2 2021
Zinc for the common cold PMID:23775705 DOI:10.1002/14651858.CD001364.pub4 2013
Interventions for managing halitosis PMID:31825092 DOI:10.1002/14651858.CD012213.pub2 2019
Interventions for itch in people with advanced chronic kidney disease PMID:33283264 DOI:10.1002/14651858.CD011393.pub2 2020
Topical antimicrobial agents for treating foot ulcers in people with diabetes PMID:28613416 DOI:10.1002/14651858.CD011038.pub2 2017
Local interventions for the management of alveolar osteitis (dry socket) PMID:36156769 DOI:10.1002/14651858.CD006968.pub3 2022
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.