Silagra 50 mg (which contains sildenafil) can produce effects that last for several hours, but the duration varies from person to person. How long do the effects last? Starts working: Usually within 30–60 minutes after taking the tablet. Peak effect: Often occurs about 1 hour after taking it. Duration: The effects generally last for up to 4 hours, although the ability to achieve an erection gradually decreases over that time. It's important to note that this does not mean you will have a continuous erection for 4 hours. Silagra 50 mg only helps you achieve an erection when you are sexually stimulated. Factors that affect how long it lasts Your age Your overall health Liver or kidney function Whether you've eaten a large, high-fat meal before taking it (which can delay its onset) Alcohol consumption Other medications you are taking Tips for best results Take Silagra about 30–60 minutes before sexual activity. Avoid heavy meals immediately before taking it. Limit alcohol, as it can reduce effectiveness and increase side effects. Take only the prescribed dose and do not use more than one dose in 24 hours unless your healthcare provider advises otherwise. When to seek medical attention Get immediate medical care if you experience: An erection lasting more than 4 hours (priapism) Sudden loss of vision or hearing Chest pain, severe dizziness, or fainting For most men, Silagra 50 mg provides erectile dysfunction support for around 4 hours, though the exact duration can differ based on individual factors.