Maxon

Sildenafil, the active ingredient in Maxon, is a phosphodiesterase type 5 (PDE5) inhibitor presented as an oral tablet for oral use. It works by enhancing blood flow to the corpus cavernosum, thereby treating erectile dysfunction in adult males, and it is also approved for pulmonary arterial hypertension to improve exercise capacity and reduce vascular resistance.

GNH USA supplies Maxon as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, adhering to stringent quality standards and regulatory requirements across EU and global markets.

Sildenafil is used in conditions that involve impaired nitric‑oxide mediated vasodilation.

- Erectile dysfunction: improves ability to achieve and maintain an erection sufficient for sexual activity. - Pulmonary arterial hypertension: reduces pulmonary vascular resistance and enhances exercise tolerance.

Common Side Effects: - Headache: mild to moderate pain often occurring shortly after dosing. - Flushing: warmth and redness of the face or upper chest. - Dyspepsia: indigestion or upset stomach. - Nasal congestion: stuffy or runny nose. - Visual disturbances: blurred vision or a blue‑tinted visual field. - Back pain: muscle aches, typically in the lower back.

Serious or Rare Side Effects: - Priapism: prolonged erection lasting more than four hours, requiring urgent medical attention. - Sudden vision loss: abrupt loss of vision in one or both eyes, possibly indicating non‑arteritic anterior ischemic optic neuropathy. - Sudden hearing loss: rapid decrease or loss of hearing, sometimes accompanied by tinnitus. - Myocardial infarction: heart attack symptoms such as chest pain or pressure. - Stroke: neurological deficits suggestive of cerebrovascular accident.

Before using Maxon, consider the following precautions: - Cardiovascular assessment: evaluate for recent cardiac events or unstable angina. - Concomitant nitrate therapy: avoid use with nitrates due to risk of severe hypotension. - Severe hepatic impairment: dose adjustment may be required. - Retinitis pigmentosa: use with caution in patients with this retinal disorder. - Hypotension: monitor blood pressure, especially in patients on antihypertensives. - Store at below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Sildenafil may interact with several medications; review the following groups:

Major Interactions (Avoid): - Nitrates (e.g., nitroglycerin): can cause profound hypotension. - Guanylate cyclase stimulators (e.g., riociguat): additive vasodilatory effect. - Certain alpha‑blockers (e.g., doxazosin): risk of marked blood pressure drop.

Moderate Interactions (Monitor Closely): - Strong CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin): may increase sildenafil exposure. - CYP3A4 inducers (e.g., rifampin, carbamazepine): may reduce efficacy. - Antihypertensive agents: monitor for additive blood pressure lowering. - Protease inhibitors (e.g., ritonavir): can elevate plasma levels. - Certain antifungal agents (e.g., itraconazole): may increase systemic exposure.