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Drug interactions

Aluminum hydroxide + Willow bark

Severity: Minor

Aluminum hydroxide and Willow bark: minor 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 changes in urinary pH could theoretically alter salicylate elimination. With aluminum hydroxide the effect is expected to be small.

What this interaction means in plain words

Aluminum hydroxide and Willow bark have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Evidence level: Low

Why it happens

Urinary pH changes may alter renal tubular reabsorption of salicylic acid, but aluminum hydroxide has weak effect.

What to do

No routine action is needed; monitor for salicylate effects or loss of effect if high doses are used.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Aluminum hydroxide with Willow bark?

MediHelp rates the interaction as minor. Aluminum hydroxide and Willow bark have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Willow bark contains salicin, which is converted to salicylic acid, so changes in urinary pH could theoretically alter salicylate elimination. With aluminum hydroxide the effect is expected to be small.

How serious is the interaction between Aluminum hydroxide and Willow bark?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action is needed; monitor for salicylate effects or loss of effect if high doses are used.

What other medicines interact with Aluminum hydroxide?

MediHelp also lists interactions of Aluminum hydroxide with, for example, Ciprofloxacin, Deferasirox, Dolutegravir. The full list is on the Aluminum hydroxide page.

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