BNF Sildenafil Dosage Strengths & Guidelines

Sildenafil is available in three standard dosage strengths (25mg, 50mg, 100mg) as outlined in the British National Formulary. Understanding the correct dosage for your needs is essential for safe and effective treatment. Our UK-licensed prescribers assess each patient individually to determine the most appropriate starting dose. At EverydayMeds, you can choose between generic sildenafil or branded Viagra during checkout.

  • 25mg - Lower strength for those requiring dose reduction
  • 50mg - Standard starting dose for most patients
  • 100mg - Maximum strength for enhanced effectiveness
  • One tablet maximum per 24-hour period
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Available Treatments

Choose from a wide range of clinically-proven, safe, and effective treatments for ED.

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Sildenafil

From £3.99

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Viagra

From £27.99

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Tadalafil

From £34.99

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Cialis

From £44.99

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Vardenafil

From £27.99

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Cialis Daily

From £89.99

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Spedra

From £22.99

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Levitra

From £32.99

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Viagra Connect

From £21.99

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Cialis Together

From £16.99

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Complete Sildenafil Dosage Information

Standard Sildenafil Dosage Strengths

According to BNF guidelines, sildenafil is manufactured in three standardised strengths. The 50mg tablet represents the typical starting dose for most adult men experiencing erectile dysfunction. This strength provides an optimal balance between effectiveness and tolerability for the majority of patients.

25mg Sildenafil - Reduced Strength

The 25mg strength may be recommended for patients who experience side effects with higher doses, those over 65 years of age, or individuals taking certain medications that could interact with sildenafil. This lower dose reduces the risk of adverse effects whilst potentially maintaining therapeutic benefit.

50mg Sildenafil - Standard Starting Dose

Most patients begin treatment with 50mg sildenafil, taken approximately one hour before sexual activity. This dose has been clinically proven effective for the majority of men with erectile dysfunction. Our prescribers typically recommend starting with this strength unless specific factors suggest otherwise.

100mg Sildenafil - Maximum Strength

The 100mg tablet represents the maximum recommended dose. This strength may be prescribed if the 50mg dose proves insufficient, provided the lower strength was well-tolerated. Patients should never exceed 100mg within a 24-hour period, as this significantly increases the risk of serious side effects.

Choosing Between Viagra and Sildenafil

Both branded Viagra and generic sildenafil contain identical active ingredients in the same dosage strengths. The choice between them often comes down to personal preference and cost considerations. At EverydayMeds, we offer both options, allowing you to select your preferred treatment during the checkout process.

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