Product image of Maguran (Doxazosin) supplied by GNH India

Maguran

Active Ingredient:
Doxazosin
Origin:
EU

Maguran (Doxazosin)

Doxazosin, the active ingredient in Maguran, is an alpha‑1 adrenergic receptor antagonist presented as an oral tablet for oral use. It is used to treat hypertension and benign prostatic hyperplasia in adult patients.
GNH India supplies Maguran as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Medochemie Hellas Sa

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Indications & Clinical Uses

  • Doxazosin acts on the alpha‑1 adrenergic pathway to manage cardiovascular and urological conditions.
  • Hypertension: lowers blood pressure by causing vasodilation and reducing peripheral vascular resistance.
  • Benign prostatic hyperplasia (BPH): relaxes smooth muscle in the prostate and bladder neck, improving urinary flow and reducing obstruction.

How It Works

  • Doxazosin selectively blocks alpha‑1 adrenergic receptors on vascular smooth muscle and in the prostate, preventing norepinephrine‑induced contraction. This blockade leads to vasodilation, decreased peripheral vascular resistance, and reduced blood pressure, while also relaxing prostatic and bladder neck smooth muscle to ease urinary obstruction.

Side Effects

Doxazosin may cause a range of adverse reactions, from mild to severe.

Common Side Effects

  • Dizziness or light‑headedness, especially on standing.
  • Headache.
  • Fatigue or tiredness.
  • Nasal congestion or runny nose.
  • Peripheral edema.
  • Gastrointestinal discomfort.

Serious or Rare Side Effects

  • Marked hypotension or syncope.
  • Priapism (prolonged erection).
  • Severe allergic reactions, including rash, itching, or swelling.
  • Angioedema affecting face, lips, or throat.
  • Liver function abnormalities.
  • Cardiac arrhythmias (rare).

Precautions & Warnings

  • Before initiating therapy, clinicians should consider several safety measures.
  • Monitor blood pressure: assess for orthostatic changes after the first dose.
  • Assess renal and hepatic function: dose adjustments may be needed in impairment.
  • Review concomitant antihypertensives: avoid excessive blood pressure lowering.
  • Caution in patients with a history of syncope or severe cardiovascular disease.
  • Avoid abrupt discontinuation: taper gradually to prevent rebound hypertension.
  • Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Avoid Interactions

Doxazosin can interact with other medicines, influencing its efficacy or safety.

Major Interactions (Avoid)

  • Other alpha‑1 blockers (e.g., prazosin, terazosin) – additive hypotensive effect.
  • Potent CYP3A4 inhibitors (e.g., ketoconazole, itraconazole) – increased plasma levels.
  • Phosphodiesterase‑5 inhibitors (e.g., sildenafil, tadalafil) – risk of severe hypotension.

Moderate Interactions (Monitor Closely):\n- Diuretics – may enhance orthostatic hypotension.

  • Other antihypertensives (beta‑blockers, ACE inhibitors) – monitor blood pressure.
  • NSAIDs – may blunt antihypertensive response.
  • Lithium – monitor serum lithium levels.
  • Antidepressants with serotonergic activity – watch for blood pressure changes.

Frequently Asked Questions

Maguran contains doxazosin, which is prescribed to manage high blood pressure (hypertension) and to relieve urinary symptoms associated with benign prostatic hyperplasia (BPH) by relaxing smooth muscle in blood vessels and the prostate.

Doxazosin selectively blocks alpha‑1 adrenergic receptors on vascular smooth muscle and in the prostate. This inhibition prevents norepinephrine‑mediated contraction, leading to vasodilation, lower peripheral resistance, and reduced blood pressure, while also relaxing prostatic and bladder neck muscles to improve urine flow.

The specific dose of Maguran is determined by the prescribing clinician based on the individual’s medical condition, response to therapy, and other factors. Patients should follow the dosage instructions provided by their healthcare professional.

Safety data for doxazosin in pregnancy and lactation are limited. It should only be used if the potential benefit justifies the potential risk to the fetus or infant, and the decision must be made by a qualified healthcare provider.

To request Maguran, 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.

Compared with non‑selective alpha blockers, doxazosin offers more targeted alpha‑1 blockade, resulting in fewer reflex tachycardia effects. It is often chosen for patients who need both blood pressure control and relief of BPH symptoms, whereas other classes like ACE inhibitors or calcium channel blockers do not address urinary obstruction.

Maguran should be stored at room temperature, below 25 °C, in its original packaging to protect it from moisture and light. Keep the product out of reach of children and do not use it after the expiry date.

Maguran is taken orally, usually once daily, with or without food as directed by a healthcare professional. Swallow the tablet whole with a glass of water; do not crush or chew unless specifically instructed.

The most serious risks include severe hypotension, syncope, and rare events such as priapism, angioedema, or significant liver injury. Patients should seek immediate medical attention if they experience sudden dizziness, fainting, prolonged erection, swelling of the face or throat, or signs of liver dysfunction.

Maguran is contraindicated in patients with known hypersensitivity to doxazosin or any component of the formulation, and in individuals with severe hypotension or a history of orthostatic collapse. Caution is also advised for patients with significant liver disease or those taking interacting medications without proper monitoring.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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