Drug interactions
Mesalamine + Willow bark
Severity: Moderate
Mesalamine and Willow bark: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Willow bark contains salicin, which is converted to salicylic acid, so combining it with mesalamine adds to total salicylate load. This raises the theoretical risk of salicylate adverse effects, including GI irritation, bleeding and renal toxicity.
What this interaction means in plain words
Mesalamine and Willow bark can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive salicylate exposure and possible competition for renal anion elimination.
What to do
Advise patients to avoid willow bark while taking mesalamine. Monitor renal function and watch for GI bleeding or tinnitus if used.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Mesalamine
Frequently asked questions
Can I take Mesalamine with Willow bark?
MediHelp rates the interaction as moderate. Mesalamine and Willow bark can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Willow bark contains salicin, which is converted to salicylic acid, so combining it with mesalamine adds to total salicylate load. This raises the theoretical risk of salicylate adverse effects, including GI irritation, bleeding and renal toxicity.
How serious is the interaction between Mesalamine and Willow bark?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise patients to avoid willow bark while taking mesalamine. Monitor renal function and watch for GI bleeding or tinnitus if used.
What other medicines interact with Mesalamine?
MediHelp also lists interactions of Mesalamine with, for example, Measles mumps rubella and varicella vaccine live, Varicella virus vaccine live, Aceclofenac. The full list is on the Mesalamine page.
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