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The drug penicillamine is primarily used to treat Wilson's disease (an inherited disorder affecting copper metabolism, causing cirrhosis and brain and eye problems) and rheumatoid arthritis.
CopperWhen used to treat Wilson's disease, penicillamine works by removing copper from the body. Taking copper supplements while you are using penicillamine for this condition is not a good idea.
Zinc Long-term use of penicillamine can cause zinc deficiency. 3 However, zinc can impair penicillamine absorption, so do not take zinc supplements during the 2 hours before or after your penicillamine dose. 4
Iron Penicillamine attaches to the mineral iron, which impairs the absorption of both substances. 5,6 The solution: If you need iron supplements, do not take them during the 2 hours before or after your penicillamine dose.
Rumsby PC and Shepherd DM. The effect of penicillamine on vitamin B 6 function in man. Biochem Pharmacol 30: 3051–3053, 1981.