Fildena Double 200 mg, look at the product's package insert/leaflet and verify the active ingredient. I couldn't find a reliable official regulatory label specifically for “Fildena Double 200 mg.” If it contains sildenafil 200 mg, that's important because the approved ED sildenafil labeling recommends 25–100 mg, with 100 mg as the maximum recommended dose once daily. D DailyMed +1 Key warnings include: Fildena Double 200 mg  not use with nitrates such as nitroglycerin or isosorbide, because of potentially dangerous low blood pressure. Do not combine with other PDE5/ED medicines such as tadalafil (Tadarise) or additional sildenafil products. Seek emergency care for an erection lasting more than 4 hours. Sudden vision or hearing loss requires prompt medical attention. Sildenafil can cause headache, flushing, dizziness, indigestion, and visual disturbances. F FDA Access Data +1 I would not recommend taking a 200 mg sildenafil tablet on your own. It is twice the maximum recommended ED dose. If you have the Fildena Double 200 mg strip/box, you can send me a photo of the front and back, and I can help you identify its ingredients and warnings.