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Flomax / Omnic / Omnic Ocas is a treatment for men with problems with urination caused by benign prostatic hyperplasia (BPH).

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Flomaxtra XL Brand 0.4mg
30 Tablets
Our price: $35.00
Omnic Brand 0.4mg
30 Tablets
Our price: $32.00
Omnic Ocas Brand 0.4mg
30 Tablets
Our price: $35.00
Tamsulin Generic 0.4mg
30 Tablets
Our price: $28.00

*Please note all prices are in US dollars
Flomax / Omnic / Omnic Ocas (tamsulosin) is prescribed for the treatment of males with urination problems caused by benign prostatic hyperplasia (BPH). Omnic Ocas is the slow-release version of tamsulosin. Tamsulosin belongs to a group of drugs called alpha-adrenergic blockers. Its effects are to block smooth muscle receptors of the prostate and urethra to improve urine flow.


The dosage and regimen will be determined by the prescribing doctor. The usual dosage is one capsule per day taken with water after breakfast (or after the first meal of the day.) If a scheduled dose is accidentally missed, do not double-dose the next day to make up for the missed dose.

This text is for informational purposes only. Please consult with a doctor or pharmacist before using any medication.

The most common adverse effects of tamsulosin include anemia, vomiting, abnormal taste, abdominal pain, headache,  muscle pain, upper respiratory tract infections, weight loss, and weakness.

Long-term use of tamsulosin can cause lower blood pressure (orthostatic hypotension), leading to dizziness or fainting. It’s advisable when rising from a sitting or lying down position to do so slowly, while holding on to something firm.

If these or other unlisted symptoms persist or worsen, talk to a doctor or pharmacist.

Benign prostatic hyperplasia (BPH) can cause difficulties in urination, necessitating frequent visits to the toilet, difficulty in beginning the flow of urine, weaker streams of urine, and greater feelings of urgency to urinate, including during sleep.

  • Does Flomax make you pee more?
    Flomax allows the bladder to empty completely with each visit to the toilet, so this should result in fewer trips to the restroom. Flomax treats symptoms of benign prostatic hyperplasia (BPH), which include interfering with the stream of urine.
  • Does Flomax work like Viagra?
    Flomax and Viagra (sildenafil) have completely different purposes. Sildenafil is used for treating impotence (the inability to attain or maintain an erection), otherwise known as erectile dysfunction (ED.) Flomax helps the muscles around the urethra and prostate to relax, which decreases the obstruction to the flow of urine.
  • Why does Flomax stop you from ejaculating?
    Flomax does not prevent ejaculation or orgasm. In some cases, it can cause retrograde ejaculation, which happens when semen is not ejaculated, but is pushed back into the bladder. This phenomenon is harmless.
  • Can tamsulosin help premature ejaculation?
    A clinical study showed that alpha-blocker agents like tamsulosin have an inhibitory effect on ejaculation. This could have a beneficial effect for men who experience premature ejaculation (PE.)
  • Can I drink coffee or alcohol while taking tamsulosin?
    Caffeine can make symptoms of BPH worse, so drinking less tea, coffee and cola is generally beneficial, regardless of whether or not tamsulosin is being taken. Alcohol can increase the risk of some of the side-effect of tamsulosin, including dizzyness.

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