Flomax (tamsulosin) is an alpha-adrenergic blocker used to treat symptoms of benign prostatic hyperplasia (enlarged prostate gland) in men. When the prostate is enlarged, urination becomes more difficult. Drugs.com indicates that Flomax works by relaxing veins, arteries and muscles in the prostate and bladder, improving blood flow and urinary function. Flomax is available by prescription and dispensed as a capsule. Most side effects associated with Flomax are negligible (do not need medical treatment) or can be easily remedied by a physician. However, as with any medication, it is important to understand potential side effects.
Common Side Effects
As of 2009, the Mayo Clinic indicated several common side effects associated with Flomax. Physical changes may occur, including body aches or pain, back pain, decreased strength, weakness and dizziness. Boehringer Ingelheim Pharmaceuticals (manufacturer of Flomax) explains that weakness or dizziness may stem from a medication-induced drop in blood pressure upon abruptly standing.
Some persons may additionally experience swollen or tender glands in the neck, indicative of lymphatic side effects. Congestion, sneezing, stuffy or runny nose can also occur and approximately 17.9 percent of people taking Flomax experience these side effects, as noted by Kristi Monson, PharmD for emedtv.com. In addition to upper respiratory side effects, diarrhea, voice changes, dryness or soreness of the throat, and difficulty swallowing may occur. Monson additionally reports that clinical studies have determined abnormal ejaculation to manifest in up to 18.1 percent of patients.
Less Common Side Effects
Less common side effects typically occur in 1 to 5 percent of individuals taking Flomax, as indicated by emedtv.com. Changes in sleep patterns can be noticeable as sleepiness and insomnia may persist. Increased severity of congestion leading to a sinus infection and increased coughing may also occur. Diminished sex drive, vertigo, blurred vision, chest pain and tooth problems are additional less common side effects.
Reportable Side Effects
While you should never hesitate to report minor side effects to your medical care provider, there are several, more severe side effects which should be reported immediately. Any sign of an allergic reaction should be reported in a timely manner and Boehringer Ingelheim Pharmaceuticals urges patients to do so. Signs of an allergic reaction include hives, itching, skin rash, swelling of the face, throat or tongue, difficulty breathing (including wheezing) or swallowing. A painful erection that cannot be relieved by sex and any sign of severe lightheadedness, fainting or dizziness should also be reported. You can additionally report side effects to the Food and Drug Administration at (800) FDA-1088.
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