Fildena 100 Purple pills are a medication used to treat erectile dysfunction (ED) in men. Its active ingredient, sildenafil citrate, is a PDE5 inhi***or that improves blood flow to the penis during sexual stimulation, helping men achieve and sustain an erection. Fildena 100 is typically taken 30-60 minutes before sexual activity and its effects last for 4-6 hours. Common side effects include headache, flushing, dizziness, and indigestion. Serious side effects like priapism (prolonged erections) or vision changes require immediate medical attention. Fildena 100 should not be used with nitrates or certain heart medications. Always consult a healthcare provider before use.