Before you use Fildena 200 mg, ensure that you check out all the dos and don'ts to ensure proper safe and effective result. Do take the pill 30-60 minutes before sexual activity and with a glass of water; ensure your doctor has approved its use, particularly if you have any pre-existing condition like heart problems. Do not use Fildena with alcohol or grapefruit juice as it will reduce the effectiveness and cause side effects. Avoid having it with nitrate drugs as it can lead to grave medical condition. Do not take more than what has been prescribed, and do not take an extra tablet in a day. To know more log onto Meds4gen.