Prescription onlyLower-cost generic available

Flomax

(Tamsulosin)

  • Pill
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Makes it easier to urinate.

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Prescription onlyLower-cost generic available

Our pharmacists’ bottom line

Flomax (Tamsulosin) is a first-choice treatment for enlarged prostate, and it's available as a generic. However, it can cause changes in your sex drive and can take a while to kick in.

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  • First-choice medication for relieving the symptoms of an enlarged prostate.
  • Helps make urinating easier.
  • Available as a generic medication.
  • Also available in a combination form with another medication to treat more severe symptoms of an enlarged prostate.
  • Since it works only on the muscles around the prostate, it has fewer blood pressure and heart-related side effects than other medicines in the same class.
  • Has to be taken the same time every day.
  • It can take up to one month to see the full effects of the medication.
  • Can reduce sex drive.
  • Flomax (Tamsulosin) can't be stopped suddenly, so you'll need to talk to your doctor about how to stop taking it safely.
  • It doesn't shrink the size of the prostate.

Save on your next Flomax (Tamsulosin) prescription

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Side effects for Flomax (Tamsulosin)

From clinical trials of Flomax / Enlarged prostate (.4 mg) ( 995)

  • HeadacheHeadache19% for Tamsulosin vs.20% for placebo
  • DizzinessDizziness15% for Tamsulosin vs.10% for placebo
  • Inflammation inside the noseInflammation inside the nose13% for Tamsulosin vs.8% for placebo
  • InfectionInfection9% for Tamsulosin vs.8% for placebo
  • Muscle weaknessMuscle weakness8% for Tamsulosin vs.6% for placebo
  • Abnormal ejaculationAbnormal ejaculation8% for Tamsulosin vs.0% for placebo
  • Back painBack pain7% for Tamsulosin vs.6% for placebo
  • Sore throatSore throat6% for Tamsulosin vs.5% for placebo
  • DiarrheaDiarrhea6% for Tamsulosin vs.5% for placebo
  • Chest painChest pain4% for Tamsulosin vs.4% for placebo

What to expect when you take Flomax (Tamsulosin) for Prostate (BPH)

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Tips from our pharmacists
  • Take this 30 minutes after the same meal every day.
  • Can cause dizziness, muscle pain, headache and stuffy/runny nose.
  • Can cause changes in sex drive.
  • Don't stop taking this medication suddenly without talking to your doctor.

Risks and Warnings for Flomax (Tamsulosin)

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    • Higher risk if:
    • Taking medications for high blood pressure

    People on Flomax (Tamsulosin) can experience lowered blood pressure which can cause dizziness and falls. This usually happens when you first start taking the medication. Your body should adjust to it after the first few days. Be very careful getting up from a sitting or lying down position.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Flomax (Tamsulosin)

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The FDA category for this medication is B. It is advised that you: Probably safe
Pregnancy
Alcohol
  • Risks from our pharmacists
  • People on Flomax (Tamsulosin) can be more likely to have heat stroke. Drink plenty of fluids if you're going to be in hot weather, especially if you're going to be exercising or drinking alcohol.
Food
  • Tips from our pharmacists
  • Take this 30 minutes after the same meal every day.
  • If I eat the wrong food or inhale the wrong fumes it doesn't work. Then I have to get a catheter in. Seems like I have a spasm and after a couple hours I'm okay again
    Taken for: Enlarged prostate
    Duration taken: Two years or more
  • Took in the morning after breakfast
    Age: 50
    Gender: Man
    Taken for: Enlarged prostate
    Duration taken: A year or so
Sex
  • Upsides and downsides from our pharmacists
  • Can reduce sex drive.
  • Tips from our pharmacists
  • Can cause changes in sex drive.
  • Risks from our pharmacists
  • People on Flomax (Tamsulosin) can experience changes in their sex drive. Talk to your doctor if you find this bothers you.
  • Retrograde ejaculation, meaning that when you ejaculate, nothing comes out, or very little. This side effect is sporatic, so you never know how much is going to come out. Not a contraceptive!
    Age: 30
    Gender: Man
    Taken for: Stricture of unknown cause
    Duration taken: A few months
  • Weakened ejaculations and reduced semen
    Taken for: Enlarged prostate
    Duration taken: Two years or more
  • Retrograde ejaculation... nothing comes out during orgasm most of the time and you can't tell when the exception will happen. Not a contraceptive! Excellent urine flow, though.
    Age: 52
    Gender: Man
    Taken for: Enlarged prostate
Sleep
  • Caused drowsiness and congestion
    Age: 45
    Gender: Man
    Taken for: Enlarged prostate