While the standard dose is 100 mg, doubling it to Fildena 200 mg may pose risks and side effects. Your doctor will assess your medical history, current health status, and potential drug interactions to determine the safest and most effective dosage for you. Taking 200 mg of Sildenafil without medical guidance can lead to adverse effects such as headaches, dizziness, flushing, and even serious complications in certain individuals. Prioritize your health and seek professional advice before making any changes to your medication regimen.