Dutasteride prevents the conversion of testosterone to dihydrotestosterone (DHT) in the body. DHT is involved in the development of benign prostatic hyperplasia (BPH).

Dutasteride is used to treat benign prostatic hyperplasia (BPH) in men with an enlarged prostate. Dutasteride helps improve urinary flow and may also reduce your need for prostate surgery later on.

Dutasteride is sometimes given with another medication called tamsulosin (Flomax). Be sure to read the medication guide or patient instructions provided with each of your medications.

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  • Avodart
  • Rare
    Chest pain or discomfort
    dilated neck veins
    extreme fatigue
    irregular breathing
    irregular heartbeat
    shortness of breath
    swelling of the face, fingers, feet, or lower legs
    weight gain
    Incidence not known
    Blistering, flaking, or peeling of the skin
    difficulty with swallowing
    fast heartbeat
    hives or welts
    itching skin
    large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
    puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
    redness of the skin
    skin rash
    tightness in the chest
    unusual tiredness or weakness
    Severity: Minor
    Some of the side effects that can occur with dutasteride may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

    Less common
    Abnormal ejaculation
    decreased interest in sexual intercourse
    decreased sexual performance or desire
    inability to have or keep an erection
    loss in sexual ability, desire, drive, or performance
    pain, soreness, swelling, or discharge from the breast or breasts
  • (oral capsule)