What is Sildenafil? How it work?
Sildenafil is a medicine used to treat erection problems (Erectile Dysfunction) which works by temporarily increasing blood flow to your penis when you get sexually excited. Sildenafil is available on prescription and you can also buy it from most pharmacies.
Sildenafil is also sometimes used to treat pulmonary hypertension (high blood pressure in the blood vessels that supply the lungs). In pulmonary hypertension it works by relaxing blood vessels in the chest.

How long does Sildenafil last?
Sildenafil typically lasts 4 to 6 hours after it’s taken. This means its effects on improving blood flow and helping to achieve or maintain an erection can last within that timeframe. However, this doesn’t mean you’ll have an erection for all 6 hours – sexual stimulation is still required.
The duration of effect can be influenced by factors such as fatty meals, alcohol consumption, and individual health conditions.
Key points: Sildenafil won’t cause an erection on its own – you’ll still need to be sexually aroused for it to be effective.
If you’re looking for longer – lasting effects, other medications like Tadalafil can last up to 36 hours. Let me know if you’d like a comparison chart of different erectile dysfunction medications.
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What happens if You take 100mg of Sildenafil more than once a day
How much Sildenafil is too much?
Sildenafil tablets for Erectile Dysfunction come in different strengths ranging from 25mg to 100mg. The dose can be increased to 100mg or decreased to 25mg depending on its effect.
Why More Isn’t Better – Sildenafil works by improving blood flow, but there is a limit to how much the body can safely process. Increasing the dose beyond 100mg does not make the medication more effective; in fact, it could worsen side effects and even reduce sexual performance due to discomfort or anxiety.
For most men, 100mg of Sildenafil is considered the maximum recommended dose and is safe when prescribed by a doctor. However, it is not the starting dose for everyone. Doctors typically begin with a 50mg dose and adjust it based on the patient’s response and tolerance – As most commonly recommended by our pharmacists.
If it’s not working as expected, speak to a doctor – they may adjust your dose or suggest an alternative like Tadalafil. Which is better sildenafil or tadalafil. Read more
Safe Usage Guidelines
- Start with the lowest effective dose (commonly 50mg) and take correctly (e.g., on an empty stomach and avoiding alcohol or fatty foods).
- Only take one dose in 24 hours. If one dose isn’t effective, don’t double up.
- Never double up if one dose doesn’t work – speak to your doctor instead.
Conclusion
Sildenafil doesn’t work “better” at higher doses, and exceeding the limit can put your health at risk.
Taking too much Sildenafil – more than the recommended maximum of 100mg per day – can lead to serious side effects without offering any extra benefit. Sildenafil doesn’t work “better” at higher doses, and exceeding the limit can put your health at risk.
It’s essential to follow the dosage instructions provided by a healthcare professional or as indicated on the medication label. Taking more than the recommended dose can increase the risk of side effects and complications, including headaches, dizziness, flushing, vision changes, and priapism (a prolonged and painful erection).