Product image of Hypovase (Prazosin) supplied by GNH India

Hypovase

Active Ingredient:
Prazosin
Origin:
EU

Hypovase (Prazosin)

Prazosin, the active ingredient in Hypovase, is a alpha-1 adrenergic antagonist presented as an oral tablet for oral use. It is employed to lower blood pressure, relieve urinary obstruction in benign prostatic hyperplasia, and reduce nightmares in post‑traumatic stress disorder.
GNH India supplies Hypovase as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Pfizer Healthcare Ireland Unlimited Company

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Indications & Clinical Uses

Prazosin acts on the alpha‑1 adrenergic pathway to manage several cardiovascular and urological conditions.

  • Hypertension: lowers systolic and diastolic blood pressure by reducing peripheral vascular resistance.
  • Benign prostatic hyperplasia (BPH): eases urinary outflow obstruction by relaxing smooth muscle in the prostate and bladder neck.
  • Post‑traumatic stress disorder (PTSD) nightmares: diminishes the frequency and intensity of trauma‑related sleep disturbances through central nervous system effects.

How It Works

  • Prazosin selectively blocks peripheral alpha‑1 adrenergic receptors, preventing norepinephrine‑induced vasoconstriction. This vasodilation decreases systemic vascular resistance, leading to reduced arterial pressure. In the lower urinary tract, receptor blockade relaxes smooth muscle of the prostate and bladder neck, improving urine flow. Central alpha‑1 antagonism also modulates neural pathways involved in stress‑related dreaming.

Side Effects

Common Side Effects

  • Dizziness: feeling light‑headed, especially when standing quickly.
  • Headache: mild to moderate pressure in the head.
  • Fatigue: general tiredness or lack of energy.
  • Nasal congestion: blocked or runny nose.

Serious or Rare Side Effects

  • Severe hypotension: markedly low blood pressure that may cause fainting.
  • Syncope: sudden loss of consciousness.
  • Priapism: prolonged, painful erection requiring urgent medical attention.

Precautions & Warnings

Before initiating therapy, consider the following precautions.

  • Blood pressure monitoring: obtain baseline readings and reassess after dose changes.
  • Concurrent antihypertensives: adjust doses to avoid excessive hypotension.
  • History of heart disease: use with caution in patients with coronary artery disease or recent myocardial infarction.
  • Pregnancy and lactation: safety not established; avoid unless benefits outweigh risks.
  • Store at ambient temperature: keep in the original container, protect from moisture and light.

Avoid Interactions

Prazosin may interact with several drug classes.

Major Interactions (Avoid)

  • Potent CYP3A4 inhibitors (e.g., ketoconazole): may increase prazosin plasma concentrations.
  • Other alpha‑blockers: additive hypotensive effect can lead to severe blood pressure drops.

Moderate Interactions (Monitor Closely)

  • Diuretics: enhanced blood‑pressure‑lowering effect, especially during initiation.
  • Beta‑blockers: may mask reflex tachycardia caused by hypotension.
  • Phosphodiesterase‑5 inhibitors: increased risk of orthostatic hypotension.

Frequently Asked Questions

Hypovase contains prazosin, an alpha‑1 adrenergic antagonist indicated for managing hypertension, relieving urinary obstruction in benign prostatic hyperplasia, and reducing trauma‑related nightmares in post‑traumatic stress disorder.

Prazosin selectively blocks peripheral alpha‑1 receptors, preventing norepinephrine‑mediated vasoconstriction. This causes blood‑vessel relaxation, lowering systemic vascular resistance and blood pressure, while also relaxing smooth muscle in the prostate and bladder neck and modulating central pathways that affect sleep.

The appropriate dose of prazosin is determined by the prescribing clinician based on the individual’s condition, response, and tolerance. Dosage may be started low and titrated upward under medical supervision.

Safety data for prazosin during pregnancy and lactation are limited. It is classified as pregnancy category unknown, and use is generally avoided unless the potential benefit justifies the potential risk to the fetus or infant.

To request Hypovase, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Unlike beta‑blockers or ACE inhibitors, prazosin lowers blood pressure by vasodilation through alpha‑1 blockade rather than affecting heart rate or the renin‑angiotensin system. It is particularly useful when a rapid reduction in peripheral resistance is desired or when treating BPH concurrently.

Store Hypovase at ambient temperature, preferably below 25 °C, in its original packaging. Protect the tablets from moisture, excessive heat and direct sunlight to maintain potency throughout the shelf life.

Hypovase is taken orally, usually with a full glass of water. It may be administered with or without food, but patients should follow the prescriber’s instructions regarding timing and whether to take it on an empty stomach.

The most serious adverse events include severe hypotension, syncope (fainting) and priapism. Patients should be advised to rise slowly from sitting or lying positions and to seek immediate medical attention if they experience prolonged erections or sudden loss of consciousness.

Hypovase is contraindicated in patients with known hypersensitivity to prazosin or any component of the formulation, and it should be used with caution in individuals with severe cardiovascular disease, recent myocardial infarction, or those taking other potent alpha‑blockers.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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