Drug interactions
Aluminum hydroxide + Pseudoephedrine
Severity: Minor
Aluminum hydroxide and Pseudoephedrine: 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
Antacids may raise urinary pH, and sufficient alkalinization can reduce renal excretion of pseudoephedrine and increase its exposure. The effect is generally small except with frequent or high antacid doses.
What this interaction means in plain words
Aluminum hydroxide and Pseudoephedrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Aluminum hydroxide belongs to Gastrointestinal Tract; Pseudoephedrine belongs to Respiratory.
Why it happens
Urinary alkalinization increases tubular reabsorption of pseudoephedrine, reducing renal clearance; aluminum hydroxide has only a weak effect on urine pH.
What to do
No routine action is needed; monitor for increased stimulant effects if high antacid doses are used chronically.
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?
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Other interactions of Aluminum hydroxide
Frequently asked questions
Can I take Aluminum hydroxide with Pseudoephedrine?
MediHelp rates the interaction as minor. Aluminum hydroxide and Pseudoephedrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Antacids may raise urinary pH, and sufficient alkalinization can reduce renal excretion of pseudoephedrine and increase its exposure. The effect is generally small except with frequent or high antacid doses.
How serious is the interaction between Aluminum hydroxide and Pseudoephedrine?
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 increased stimulant effects if high antacid doses are used chronically.
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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