Sildenafil 100mg is a commonly prescribed medication for treating erectile dysfunction (ED). To use it effectively, take one tablet by mouth with a glass of water about 30 to 60 minutes before planned sexual activity. It works best on an empty stomach and should not be taken more than once in 24 hours. Avoid high-fat meals, alcohol, or grapefruit products around the time of taking the dose, as they may delay or reduce effectiveness. Do not split or crush the tablet. Always follow your doctor’s instructions to ensure safety and maximize the benefits of sildenafil 100mg.