Mexon

Sildenafil, the active ingredient in Mexon, is a phosphodiesterase type 5 (PDE5) inhibitor presented as a tablet (strength not specified) for oral use. It treats erectile dysfunction and pulmonary arterial hypertension in adult patients. GNH USA supplies Mexon as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Sildenafil is a phosphodiesterase type 5 inhibitor used to manage vascular‑related conditions.

- Erectile dysfunction: improves the ability to achieve and maintain an erection suitable for sexual activity. - Pulmonary arterial hypertension: lowers pulmonary arterial pressure and enhances exercise capacity in patients with PAH.

Sildenafil may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects: - Headache: mild to moderate headache 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 emergency care. - Sudden hearing loss: abrupt decrease or loss of hearing. - Myocardial infarction: heart attack, especially in patients with cardiovascular disease. - Stroke: cerebrovascular accident presenting with neurological deficits. - Severe hypotension: dangerous drop in blood pressure, potentially causing dizziness or fainting. - Vision loss: rare cases of non‑arteritic anterior ischemic optic neuropathy.

Before prescribing or dispensing Mexon, consider the following safety measures.

- Cardiovascular assessment: evaluate recent cardiac events or unstable angina. - Concomitant nitrate use: avoid due to risk of profound hypotension. - Visual disorders: use caution in patients with retinal diseases such as retinitis pigmentosa. - Hypotension risk: monitor blood pressure, especially in patients on antihypertensives. - Drug interactions: review all concomitant medications for potential interactions. - Store at below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Sildenafil can interact with several medicines, requiring careful management.

Major Interactions (Avoid): - Nitrates (e.g., nitroglycerin): may cause severe hypotension. - Guanylate cyclase stimulators (e.g., riociguat): additive blood‑pressure‑lowering effect. - Alpha‑blockers (e.g., doxazosin): can lead to marked hypotension.

Moderate Interactions (Monitor Closely): - Strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole): increase sildenafil plasma concentrations. - CYP3A4 inducers (e.g., rifampicin, carbamazepine): reduce sildenafil effectiveness. - Antihypertensive agents: may enhance blood‑pressure‑lowering actions, requiring dose adjustments.