Flomax (Tamsulosin) is used in men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia or BPH) which include difficulty urinating (hesitation, dribbling, weak stream, and incomplete bladder emptying), painful urination, and urinary frequency and urgency. Tamsulosin is in a class of medications called alpha blockers. It works by relaxing the muscles in the prostate and bladder so that urine can flow easily. Tamsulosin (Generic) is available for purchase. 

Tamsulosin comes as a capsule to take by mouth. It is usually taken once a day. Take tamsulosin 30 minutes after the same meal each day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take tamsulosin exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Swallow tamsulosin capsules whole; do not split, chew, crush, or open them. Your doctor will probably start you on a low dose of tamsulosin and may increase your dose after 2 to 4 weeks. Tamsulosin may help control your condition, but it will not cure it. Continue to take tamsulosin even if you feel well. Do not stop taking tamsulosin without talking to your doctor.

Before taking tamsulosin,

• tell your doctor and pharmacist if you are allergic to tamsulosin, sulfa medications, or any other medications.
• tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements and herbal products you are taking or plan to take. Be sure to mention any of the following: other alpha blocker medications such as alfuzosin (Uroxatral), doxazosin (Cardura), prazosin (Minipress), and terazosin (Hytrin); anticoagulants ('blood thinners') such as warfarin (Coumadin); and medications for erectile dysfunction (ED) such as sildenafil (Viagra), tadalafil (Cialis), or vardenafil (Levitra); Your doctor may need to change the doses of your medications or monitor you more carefully for side effects.
• tell your doctor if you have or have ever had prostate cancer or liver or kidney disease.
• you should know that tamsulosin is only for use in men. Women should not take tamsulosin, especially if they are pregnant or could become pregnant or are breast-feeding. If a pregnant woman takes tamsulosin, she should call her doctor.
• if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking tamsulosin. If you need to have eye surgery at any time during or after your treatment, be sure to tell your doctor that you are taking or have taken tamsulosin.
• you should know that tamsulosin may cause dizziness, lightheadedness, a spinning sensation, and fainting, especially when you get up too quickly from a lying position. This is more common when you first start taking tamsulosin or after your dose is increased. To help avoid this problem, get out of bed slowly, resting your feet on the floor for a few minutes before standing up. Call your doctor if these symptoms are severe or do not go away.

Tamsulosin may cause side effects including: 

• sleepiness
• difficulty falling asleep or staying asleep
• weakness
• back pain
• diarrhea
• pain or pressure in the face
• sore throat, cough, fever, chills, or other signs of infection
• blurred vision
• difficulty ejaculating

Tell your doctor if any of these symptoms or those in the SPECIAL PRECAUTIONS section are severe or do not go away. Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:

• painful erection of the penis that lasts for hours
• rash; itching; hives; swelling of the eyes, face, tongue, lips, throat, arms, hands, feet, ankles, or lower legs

Q: Why is Flomax prescribed?

A: Flomax is used to improve urination in men with BPH (benign prostatic hyperplasia).

Q: Does Flomax have a generic alternative?

A: Tamsulosin (Generic) is available for purchase. 

Q: What if I miss a dose of Flomax?

A: Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

Q: What if I miss several doses of Flomax?

A: If you interrupt your treatment for several days or longer, call your doctor before restarting the medication, especially if you take more than one capsule of tamsulosin a day.

Q: What if I suspect someone overdosed on Flomax?

A: In case of overdose, call your local poison control center or doctor. If the victim has collapsed or is not breathing, call local emergency services. Symptoms of overdose may include:

• dizziness
• fainting
• blurred vision
• upset stomach
• headache

Q: How should I store this medication?

A: Flomax should be kept in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom).