Silagra 100 mg as directed by your healthcare provider. Do not exceed the recommended dosage or take it more frequently than prescribed. Taking too much sildenafil citrate can increase the risk of side effects and complications. Silagra 100 mg, you should avoid using this medication. Avoid Grapefruit Juice: Grapefruit juice may interact with sildenafil citrate and increase the levels of the medication in your bloodstream, potentially leading to adverse effects. It's advisable to avoid consuming grapefruit or grapefruit juice while using Silagra 100 mg.