Drug interactions
Benzphetamine + Pirbuterol
Severity: Moderate
Benzphetamine and Pirbuterol: 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
Benzphetamine is a sympathomimetic anorectic, and pirbuterol is a beta-2 agonist with some cardiac stimulation at higher doses. Used together they may produce additive increases in heart rate and blood pressure, with palpitations, tremor or nervousness.
What this interaction means in plain words
Benzphetamine and Pirbuterol 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 sympathomimetic pharmacodynamic effects on the cardiovascular system and CNS.
What to do
Monitor heart rate and blood pressure and ask about palpitations or tremor. Reduce doses or stop one agent if cardiovascular symptoms develop.
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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Frequently asked questions
Can I take Benzphetamine with Pirbuterol?
MediHelp rates the interaction as moderate. Benzphetamine and Pirbuterol 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. Benzphetamine is a sympathomimetic anorectic, and pirbuterol is a beta-2 agonist with some cardiac stimulation at higher doses. Used together they may produce additive increases in heart rate and blood pressure, with palpitations, tremor or nervousness.
How serious is the interaction between Benzphetamine and Pirbuterol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor heart rate and blood pressure and ask about palpitations or tremor. Reduce doses or stop one agent if cardiovascular symptoms develop.
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