Quick Reference: Side Effect Management
How Long Does Viagra Take to Work?
Viagra typically begins working within 30-60 minutes of taking the tablet. The medication may work more quickly on an empty stomach, as fatty meals can delay absorption. Effects can last up to 4-6 hours, though this doesn't mean an erection will persist for this duration - sexual stimulation is still required for the medication to be effective.
Common Side Effects and Management
The most frequently reported side effects include headaches (affecting up to 16% of users), facial flushing, and indigestion. These typically resolve within a few hours as the medication processes through your system. For headaches, paracetamol or ibuprofen may help, though avoid exceeding recommended doses. Staying hydrated and avoiding alcohol can minimise side effects.
Visual disturbances, such as mild colour changes or increased light sensitivity, occur in fewer than 3% of patients. These effects are usually temporary and resolve as the medication clears your system. If visual changes persist beyond 24 hours, contact your healthcare provider.
When to Seek Medical Attention
Seek immediate medical help if you experience chest pain, sudden vision loss, or an erection lasting longer than 4 hours (priapism). These situations require urgent treatment. Contact NHS 111 or visit A&E if you're concerned about severe reactions.
Some men may experience sudden hearing loss or ringing in the ears. Whilst rare, this warrants prompt medical assessment. Stop taking Viagra and contact your GP or NHS 111 for advice.
Reducing Side Effect Risk
Taking Viagra as prescribed significantly reduces side effect risk. Never exceed one tablet in 24 hours, and inform your prescriber about all medications you're taking. Alcohol can increase the likelihood of side effects and may reduce Viagra's effectiveness.
At EverydayMeds, patients can choose between Viagra (branded) and Sildenafil (generic) at checkout. Both contain the same active ingredient and have identical side effect profiles, with the generic option offering cost savings whilst maintaining clinical effectiveness.
