Tamsulosin side effects

What side effects can Tamsulosin have?

Below you will find the most important information about possible known side effects of Tamsulosin.
These side effects do not occur, but you can. Because every person reacts differently to medication. Please also note that the type and frequency of side effects may vary depending on the drug formulation (eg tablet, syringe, ointment).

Common side effects:
Dizziness.

Uncommon side effects:
palpitations, rapid fatigue, headache, backward ejaculation into the bladder, hypotension with circulatory insufficiency, nausea and vomiting, diarrhea, constipation, rash, itching, nettle rash, runny nose, low blood pressure.

Rare side effects:
fainting, water retention in the tissue.

Very rare side effect:
Painful chronic erection.

Special features:
Tamsulosin can in rare cases cause shortness of breath, leading to swelling of the mucous membranes in the upper respiratory tract, respectively the larynx.

During cataract surgery, some patients taking tamsulosin experienced “Intraoperative Floppy Iris Syndrome” (IFIS) (which causes narrowing of the pupil). This pupil narrowing can lead to increased surgical difficulties during cataract surgery. Patients scheduled for cataract surgery should not start treatment with tamsulosin.

What interactions does Tamsulosin show?

Please note that the interactions may vary depending on the drug formulation of a drug (eg tablet, syringe, ointment).

Taking tamsulosin with other alpha sympatholytic agents can lead to a sharp drop in blood pressure.

Taking tamsulosin concomitantly with diclofenac or warfarin may shorten the effect of tamsulosin.

Potential Tamsulosin side effects may include: