Quick Summary
Generic sildenafil and brand Viagra contain the same active ingredient and are clinically equivalent in effectiveness. The main differences are cost, branding, and inactive ingredients.
- Active ingredient: identical (sildenafil citrate)
- Effectiveness: clinically equivalent
- Main difference: price & branding
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Key Differences
Brand Viagra
- Original patented formulation
- Higher cost
- Manufactured by Pfizer
- Strict branding & packaging
Generic Sildenafil
- Same active ingredient
- Lower cost
- Multiple manufacturers
- May differ in fillers/inactive ingredients
Is Generic Sildenafil as Effective?
Yes. Regulatory agencies require generics to demonstrate bioequivalence to brand-name Viagra, meaning they work the same way in the body.
- Same absorption profile
- Same onset time (30–60 min)
- Same duration (4–6 hours)
Cost Differences
The primary advantage of generic sildenafil is cost reduction. It is significantly cheaper because manufacturers do not bear original R&D costs.
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