Prazosin is a drug available in pills. Its main active substance is prazosin. The drug performs the function of alfa blocker, and its principle is based on blocking the sensitivity of alfa-adrenoreceptors of bladder, its neck and urethra. This drug is used for the treatment of prostatic adenoma (benign tumor). The result of taking this drug by the patients is an improvement in urination dynamics and a reduction of inflammation of prostatic gland. Therefore, the patients don’t feel pain or discomfort.
Initial recommended dosage for the treatment of prostatic adenoma is 0.5 mg (usually before sleep). It is important that the patient stays in bed for 6 – 8 hours after the drug intake. Such reaction can be especially expressed if you have previously used diuretics. Considering this feature for the older people or the patients suffering from frequent changes in blood pressure, it is especially important to choose the right dosage. Because of these risks, the dosage and frequency of use must be prescribed only by your doctor.

Indications for use

Prazosin demonstrated excellent results in the treatment of prostatic hyperplasia and Raynaud’s disease. The drug has also shown a widespread use and great performance in the treatment of peripheral vascular disease and pheochromocytoma. Due to its high productivity, the drug has received the best feedbacks from the patients with chronic heart failure and arterial hypertension.


The use of Prazosin can cause some side effects, so you should be highly responsible while choosing it. This medicine is not recommended to the patients with the following conditions:

  • Arterial hypotension
  • Hypersensitivity to the active substance and additional components of the drug
  • Pregnancy and lactation
  • Children under the age of 12
  • Hyponatremia

Side effects

Patients can have the following side effects:

  • Weakness
  • Paresthesia
  • Perception disorder
  • Sickness
  • Vertigo
  • Constipation
  • Diarrhea
  • Shortness of breath

To avoid such effects and achieve maximum impact from the treatment, you should stick to the dosages and treatment course, prescribed by your doctor.