Tamsulosin
Also sold as: Flomax, Urimax, Contiflo
Prescription neededBladder, prostate and men's health
Comes as:Capsule
Usual adult dose
Usual adult dose: 400 micrograms (0.4 mg) once a day, about 30 minutes after the same meal each day. Swallow the capsule whole.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- dizziness when standing up
- runny or blocked nose
- little or no semen on ejaculation
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- fainting
- severe allergic reaction
- painful erection lasting more than 4 hours
Do not take it, or take care, if
- Fainting or dizziness when standing up (low blood pressure)
- Serious liver disease
- Tell the eye doctor before cataract surgery
Interactions
Medicines that can react with this one.
Moderate2 medicinesTake together only with care. Ask your doctor or pharmacist.
- Clarithromycin
Clarithromycin raises tamsulosin levels and the risk of dizziness and low blood pressure.
- Sildenafil
Together they can cause low blood pressure and dizziness; start sildenafil at a low dose.