Tamsulosin
Brand: Flomax
No boxed warning on the current FDA label.
- Caution
- First-dose orthostatic hypotension and fainting; intraoperative floppy iris syndrome during cataract surgery.
Common side effects
- Dizziness
- Low blood pressure on standing
- Abnormal ejaculation
- Runny nose
- Headache
Key interactions
- Adds to blood-pressure lowering drugs
- Caution with erectile-dysfunction drugs
- Strong CYP3A4 inhibitors (ketoconazole) and CYP2D6 inhibitors (paroxetine) raise its levels
- Caution with other alpha blockers
Counseling points
- Take about 30 minutes after the same meal daily
- Rise slowly to reduce dizziness
- May cause dizziness with first doses
- Tell your eye surgeon before cataract surgery
- Do not crush or chew the capsule
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High-yield study aid for exam prep, not a substitute for the package insert or a pharmacist’s dispensing reference.