Sildenafil 25 mg is a low-dose medication used to treat mild erectile dysfunction (ED). To use it effectively, take one tablet about 30 to 60 minutes before planned sexual activity. It works best when taken on an empty stomach, as fatty meals may delay its absorption and reduce effectiveness. Swallow the tablet whole with a glass of water. Avoid alcohol and grapefruit products, as they may interfere with the drug's effects. Always follow your doctor’s advice for safe and effective use.