In this Article

• What is tamsulosin (Flomax)?
• What are the possible side effects of tamsulosin (Flomax)?
• What is the most important information I should know about tamsulosin (Flomax)?
• What should I discuss with my healthcare provider before taking tamsulosin (Flomax)?
• How should I take tamsulosin (Flomax)?
• What happens if I miss a dose (Flomax)?
• What happens if I overdose (Flomax)?
• What should I avoid while taking tamsulosin (Flomax)?
• What other drugs will affect tamsulosin (Flomax)?
• Where can I get more information?

What should I discuss with my healthcare provider before taking tamsulosin (Flomax)?

You should not use this medication if you are allergic to tamsulosin. Do not take tamsulosin with other similar medicines such as alfuzosin (Uroxatral), doxazosin (Cardura), prazosin (Minipress), silodosin (Rapaflo), or terazosin (Hytrin).

If you have a history of prostate cancer, you may need a dose adjustment or special tests to safely take this tamsulosin.

Tamsulosin can affect your pupils during cataract surgery. Tell your eye surgeon ahead of time that you are using this medication. Do not stop using tamsulosin before surgery unless your surgeon tells you to.

Although this medication is not for use in women, tamsulosin is not expected to harm an unborn baby. If you are a woman using this medication, tell your doctor if you are pregnant or breast-feeding.

Tamsulosin is not for use in children.

How should I take tamsulosin (Flomax)?

Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

Your doctor may occasionally change your dose to make sure you get the best results.

Tamsulosin is usually taken once a day, approximately 30 minutes after a meal. Try to take this medication at the same time each day.

Do not crush, chew, or open a tamsulosin capsule. Swallow it whole.

Tamsulosin lowers blood pressure and may cause dizziness or fainting, especially when you first start taking it, or when you start taking it again. Call your doctor if you have severe dizziness or feel like you might pass out.

You may feel very dizzy when you first wake up. Be careful when standing or sitting up from a lying position.

If you stop taking tamsulosin for any reason, call your doctor before you start taking it again. You may need a dose adjustment.

Your blood pressure and prostate will need to be checked often. Visit your doctor regularly.

Some things can cause your blood pressure to get too low. This includes vomiting, diarrhea, heavy sweating, heart disease, dialysis, a low-salt diet, or taking diuretics (water pills). Tell your doctor if you have a prolonged illness that causes diarrhea or vomiting.

Store at room temperature away from moisture and heat.