Drug interactions
Dutasteride-tamsulosin + Lorcaserin
Severity: Minor
Dutasteride-tamsulosin and Lorcaserin: 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
Lorcaserin inhibits CYP2D6 and may raise tamsulosin exposure, a CYP2D6 substrate. This may increase dizziness or orthostatic hypotension. The clinical effect is likely modest.
What this interaction means in plain words
Dutasteride-tamsulosin and Lorcaserin 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
Lorcaserin inhibits CYP2D6, reducing tamsulosin metabolism.
What to do
Monitor for orthostatic symptoms. Reduce the tamsulosin dose if adverse effects occur.
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 Dutasteride-tamsulosin
Frequently asked questions
Can I take Dutasteride-tamsulosin with Lorcaserin?
MediHelp rates the interaction as minor. Dutasteride-tamsulosin and Lorcaserin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Lorcaserin inhibits CYP2D6 and may raise tamsulosin exposure, a CYP2D6 substrate. This may increase dizziness or orthostatic hypotension. The clinical effect is likely modest.
How serious is the interaction between Dutasteride-tamsulosin and Lorcaserin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for orthostatic symptoms. Reduce the tamsulosin dose if adverse effects occur.
What other medicines interact with Dutasteride-tamsulosin?
MediHelp also lists interactions of Dutasteride-tamsulosin with, for example, Alfuzosin, Amifostine, Atazanavir. The full list is on the Dutasteride-tamsulosin page.
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