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Benign prostatic hyperplasia/urinary retention
Only 4 drugs may be compared at once

Generic Name and Formulations:

Tamsulosin HCl 0.4mg; caps.

Select therapeutic use:

Indications for FLOMAX:



Swallow whole. Take ½ hr after same meal of each day. Initially 0.4mg once daily; may increase to 0.8mg once daily after 2–4 weeks if response is inadequate. If therapy is interrupted, resume at 0.4mg once daily and retitrate.


Not applicable.


Rule out prostate cancer. Sulfa allergy. Syncope. End-stage renal disease. Cataract or glaucoma surgery: do not initiate therapy (possible Intraoperative Floppy Iris Syndrome). Pregnancy (Cat.B).

Pharmacological Class:

Alpha-1 blocker.


Do not use with other α-blockers or strong CYP3A4 inhibitors (eg, ketoconazole). Caution with concomitant moderate CYP3A4 inhibitors (eg, erythromycin), moderate or strong CYP2D6 inhibitors (eg, paroxetine, terbinafine), or CYP2D6 poor metabolizers (esp. with tamsulosin >0.4mg/day). Caution with concomitant cimetidine (esp. with tamsulosin >0.4mg/day) or warfarin. Symptomatic hypotension with concomitant PDE5 inhibitors.

Adverse Reactions:

Headache, abnormal ejaculation, dizziness, rhinitis, infection, asthenia, back pain, diarrhea, pharyngitis, chest pain, nausea, tooth disorder, blurred vision, cough, somnolence, sinusitis, libido decreased, insomnia; rare: priapism.

How Supplied: