Fildena 100 mg should be taken orally, typically about 30 minutes to 1 hour before anticipated sexual activity. The medication can be taken with or without food, but high-fat meals may delay the onset of action. Do not take Fildena 100 mg if you are currently using nitrate medications for chest pain or heart problems. Combining sildenafil citrate with nitrates can cause a sudden and severe drop in blood pressure. https://www.onemedz.com/product/fildena-100-mg/