Flomax

Generic Name: Tamsulosin

  • What is Flomax?

    Flomax is used for the treatment of benign prostatic hyperplasia (BPH). BPH is the swelling of the prostate gland, which may in turn block the flow of urine. Flomax relaxes the muscles of the prostate and increases urine flow.

  • What is the most important information I should know about Flomax?

    Flomax is not for use in women or children.

    Flomax can cause a sudden drop in blood pressure (which may cause fainting, dizziness, or lightheadedness), especially following the first dose or when changing doses. Rise slowly from a chair or bed at any time until you learn how you react to Flomax.

    You should not drive or take part in any hazardous activities until you are used to the side effects of this drug. If you begin to feel dizzy, sit down until you feel better.

    Tell your doctor of any allergic reactions you may experience while taking Flomax. Allergic reactions may include rash, itching, or hives. Get medical help right away if you experience these rare but serious reactions: difficulty breathing or swelling of the face, tongue, or throat.

    Flomax can cause a painful erection that cannot be relieved by having sex. If this happens, get medical help right away.

  • Who should not take Flomax?

    Do not take Flomax if you are allergic to any of its ingredients.

  • What should I tell my doctor before I take the first dose of Flomax?

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Flomax. Also, talk to your doctor about your entire medical history, especially if you have any kidney or liver problems, history of low blood pressure, allergies to sulfa drugs or any other medicines, or if you are planning to have cataract surgery.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

    Adults: The usual dose is 0.4 milligrams (mg) daily. If there is no response to this strength, the dose may be increased to 0.8 mg daily.

  • How should I take Flomax?

    Flomax should be taken 30 minutes after the same meal, every day. Do not crush, chew, or open Flomax capsules.

  • What should I avoid while taking Flomax?

    Avoid any dangerous activities, such as driving or operating heavy machinery, until you know how Flomax affects you.

    Avoid abruptly changing positions from lying down to sitting up or from sitting to a standing position until you learn how you react to Flomax.

  • What are possible food and drug interactions associated with Flomax?

    If Flomax is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Flomax with the following: cimetidine, fluoxetine, ketoconazole, paroxetine, warfarin, and other drugs in the same class as Flomax.

  • What are the possible side effects of Flomax?

    Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

    Side effects may include: back pain, chest pain, cough, diarrhea, dizziness, headache, infection, nausea, sinus infection, sleeplessness, sore throat, weakness, runny nose, decreased semen production

  • Can I receive Flomax if I am pregnant or breastfeeding?

    Flomax is not indicated for use in women.

  • What should I do if I miss a dose of Flomax?

    If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the dose you missed and return to your normal dosing schedule. Do not take two doses at once.

  • How should I store Flomax?

    Store at room temperature.

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