Drug interactions
Phentermine + Tapentadol
Severity: Moderate
Phentermine and Tapentadol: 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
Phentermine is a sympathomimetic, and tapentadol inhibits noradrenaline reuptake, so they may together increase blood pressure and heart rate. Serotonergic overlap is limited but cannot be excluded.
What this interaction means in plain words
Phentermine and Tapentadol 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.
Phentermine belongs to Central Nervous System; Tapentadol belongs to Musculoskeletal.
Why it happens
Additive noradrenergic and sympathomimetic effects.
What to do
Monitor blood pressure, heart rate and mental status after starting or adjusting either drug. Avoid in uncontrolled hypertension or significant cardiovascular disease.
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 Tapentadol
- Calcium / magnesium / potassium / sodium oxybates + Tapentadol Contraindicated
- Isocarboxazid + Tapentadol Contraindicated
- Linezolid + Tapentadol Contraindicated
- Methylene blue + Tapentadol Contraindicated
- Olanzapine / samidorphan + Tapentadol Contraindicated
- Phenelzine + Tapentadol Contraindicated
Other interactions of Phentermine
- Isocarboxazid + Phentermine Contraindicated
- Linezolid + Phentermine Contraindicated
- Phenelzine + Phentermine Contraindicated
- Phentermine + Procarbazine Contraindicated
- Phentermine + Rasagiline Contraindicated
- Phentermine + Selegiline Contraindicated
Frequently asked questions
Can I take Phentermine with Tapentadol?
MediHelp rates the interaction as moderate. Phentermine and Tapentadol 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. Phentermine is a sympathomimetic, and tapentadol inhibits noradrenaline reuptake, so they may together increase blood pressure and heart rate. Serotonergic overlap is limited but cannot be excluded.
How serious is the interaction between Phentermine and Tapentadol?
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 blood pressure, heart rate and mental status after starting or adjusting either drug. Avoid in uncontrolled hypertension or significant cardiovascular disease.
What other medicines interact with Tapentadol?
MediHelp also lists interactions of Tapentadol with, for example, Calcium / magnesium / potassium / sodium oxybates, Isocarboxazid, Linezolid. The full list is on the Tapentadol page.
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