Cenforce 100 mg should be taken as prescribed by a healthcare professional, usually once per day with a glass of water, about 30-60 minutes before sexual activity. Avoid consuming alcohol, fatty meals, or grapefruit juice, as these can reduce its effectiveness or increase side effects. Do not take more than the recommended dose, and inform your doctor about any existing health conditions, especially heart, liver, or kidney issues, as well as any medications you are currently taking. Common side effects may include headache, dizziness, or flushing, so seek medical attention if severe reactions occur.