Dose and timing depend on indication, cardiovascular status, interacting drugs, age and organ function. Nitrates are a critical contraindication.
Prescription ingredient
Sexual health & pigmentation
Sildenafil
A prescription PDE5 inhibitor used in authorized products for erectile dysfunction and pulmonary arterial hypertension under different regimens.
Sildenafil50 mg
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ClassificationPDE5 inhibitor
Catalogue strength50 mg
Current contextPrescription ingredient
What it is
A prescription PDE5 inhibitor used in authorized products for erectile dysfunction and pulmonary arterial hypertension under different regimens.
Its catalogue classification is pde5 inhibitor. Status and formulation matter: a research-labelled vial is not automatically equivalent to an authorized prescription medicine containing a similarly named ingredient.
What it is studied or used for
- Erectile dysfunction
- Pulmonary arterial hypertension
- PDE5 and vascular signalling
A research topic is not proof of a health benefit. Evidence can range from cell and animal models to controlled human trials, and those levels should not be treated as equivalent.
How it is used or administered
Authorized route and schedule depend on the exact prescription product, indication and patient. Use only when prescribed and dispensed by qualified professionals.
Dosing context for men and women
Sildenafil is not generally authorized for female sexual dysfunction. Pulmonary-hypertension treatment uses specialist-directed, indication-specific dosing.
Why no universal number? Dose depends on the exact formulation, legal status, indication, concentration, patient factors and monitoring. Publishing a single male or female number would be misleading and unsafe.
Active shelf life and storage
Follow the printed expiry and the dispensing label. Shelf life cannot be transferred between brands, concentrations, compounded products or reconstituted preparations.
Follow the manufacturer and pharmacy label for the exact dispensed formulation. Temperature limits can differ between tablets, creams and injectable products.
What it may be paired with
Never pair with nitrates or riociguat. Combining with tadalafil, other PDE5 inhibitors, alpha-blockers or substantial alcohol can cause dangerous hypotension.
Safety boundary
The presence of an approved active ingredient does not establish that every formulation or seller is authorized.
Continue with primary sources
Evidence and regulatory status change. Verify the exact active ingredient, formulation and jurisdiction before drawing conclusions.
Product availability
View Sildenafil on the main site ↗
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