Drug interactions
Ketotifen + Pirbuterol
Severity: Minor
Ketotifen and Pirbuterol: 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
Ketotifen can cause drowsiness while pirbuterol is a beta-agonist that may cause nervousness and tremor. Their effects on alertness are opposing and there is no established clinically significant interaction.
What this interaction means in plain words
Ketotifen and Pirbuterol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Opposing pharmacodynamic effects on alertness; no established pharmacokinetic mechanism.
What to do
No specific action needed beyond routine counseling about ketotifen drowsiness.
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 Ketotifen
- Ketotifen + Phenobarbital Moderate
- Ketotifen + Pholcodine Moderate
- Ketotifen + Primidone Moderate
- Ketotifen + Protriptyline Moderate
- Ketotifen + Quazepam Moderate
- Ketotifen + Rotigotine Moderate
Frequently asked questions
Can I take Ketotifen with Pirbuterol?
MediHelp rates the interaction as minor. Ketotifen and Pirbuterol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ketotifen can cause drowsiness while pirbuterol is a beta-agonist that may cause nervousness and tremor. Their effects on alertness are opposing and there is no established clinically significant interaction.
How serious is the interaction between Ketotifen and Pirbuterol?
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 specific action needed beyond routine counseling about ketotifen drowsiness.
What other medicines interact with Ketotifen?
MediHelp also lists interactions of Ketotifen with, for example, Phenobarbital, Pholcodine, Primidone. The full list is on the Ketotifen page.
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