Olvion (Sildenafil)

Sildenafil, the active ingredient in Olvion, is a phosphodiesterase type 5 (PDE5) inhibitor presented as a tablet for oral use. It treats erectile dysfunction in adult males. GNH USA supplies Olvion as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

GNH USA supplies Olvion as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Sildenafil acts on the nitric‑oxide/cGMP pathway to facilitate erections in men with erectile dysfunction.

- Erectile dysfunction: improves ability to achieve and maintain an erection suitable for sexual activity. - Pulmonary arterial hypertension: lowers pulmonary arterial pressure and improves exercise capacity. - Secondary use in benign prostatic hyperplasia (off‑label): may relieve lower urinary tract symptoms associated with BPH.

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

Common Side Effects: - Headache: mild to moderate headache occurring shortly after dosing. - Flushing: warm sensation and reddening of the face or neck. - Dyspepsia: indigestion or upset stomach. - Nasal congestion: feeling of a blocked nose. - Visual disturbances: blurred vision or changes in colour perception. - Myalgia: muscle aches, particularly after physical activity.

Serious or Rare Side Effects: - Priapism: prolonged erection lasting more than four hours requiring medical attention. - Sudden vision loss: abrupt loss of vision in one or both eyes (non‑arteritic anterior ischemic optic neuropathy). - Sudden hearing loss: rapid decrease or loss of hearing. - Cardiovascular events: chest pain, arrhythmia or myocardial infarction in susceptible individuals. - Severe hypotension: marked drop in blood pressure, especially when combined with nitrates.

Before initiating therapy with Sildenafil, patients should be evaluated for cardiovascular health and concomitant medication use.

- Cardiovascular assessment: ensure stable heart condition before use. - Nitrate use: avoid concomitant use with nitrates or nitric oxide donors. - Alpha‑blockers: use with caution; monitor blood pressure. - Visual disorders: avoid if you have retinitis pigmentosa or recent non‑arteritic anterior ischemic optic neuropathy. - Hepatic or renal impairment: dose may need adjustment; consult prescriber. - Store at below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Sildenafil can interact with several drug classes, altering its efficacy or safety profile.

Major Interactions (Avoid): - Nitrates: concurrent use can cause severe hypotension. - Guanylate cyclase stimulators: may lead to excessive vasodilation. - Certain antifungals (ketoconazole, itraconazole): increase sildenafil plasma levels.

Moderate Interactions (Monitor Closely): - Alpha‑blockers: may cause additive blood‑pressure lowering effects. - Antihypertensives: monitor for enhanced hypotensive response. - CYP3A4 inhibitors (e.g., erythromycin, HIV protease inhibitors): may modestly raise sildenafil concentrations.