Essential BNF Information for Partners and Caregivers
Understanding Sildenafil: The Basics
Sildenafil is a PDE5 inhibitor medication used to treat erectile dysfunction in adult men. According to the BNF (British National Formulary), sildenafil works by increasing blood flow to the penis during sexual arousal. It's important to understand that this medication doesn't cause automatic erections - sexual stimulation is still required. Both generic sildenafil and branded Viagra contain the same active ingredient, with the main difference being cost and packaging.
BNF Dosing Guidelines
The standard starting dose is typically 50mg, taken approximately 30-60 minutes before sexual activity. Based on effectiveness and tolerability, this may be adjusted to 25mg or increased to a maximum of 100mg. The BNF emphasises that only one dose should be taken within a 24-hour period. Partners should be aware that fatty meals can delay the medication's onset of action, so timing around meals may be worth considering.
Safety Considerations from the BNF
The BNF highlights several important contraindications that partners should be aware of. Sildenafil must never be taken with nitrate medications (such as GTN spray for angina) as this can cause a dangerous drop in blood pressure. Men with severe heart disease, recent heart attacks or strokes, or severe liver problems may not be suitable candidates for this treatment. A thorough clinical assessment by a UK-licensed prescriber is always required before treatment begins.
Common Side Effects and Support
According to BNF guidance, common side effects may include headaches, facial flushing, indigestion, and nasal congestion. These are generally mild and temporary. As a partner, you can help by ensuring your loved one stays hydrated and doesn't feel pressured about timing or performance. If side effects persist or worsen, or if there are signs of serious reactions like chest pain or prolonged erections lasting over 4 hours, seek immediate medical attention.
Creating a Supportive Environment
Partners play a crucial role in treatment success. Open communication about expectations, concerns, and experiences can significantly improve outcomes. Remember that erectile dysfunction can affect confidence and self-esteem, so patience and understanding are vital. The medication may take a few attempts to find the right dose and timing that works best, and this is completely normal according to clinical guidance.












