Sildenafil is a common ingredient in Fildena, a medication used to treat erectile dysfunction. This medicine is only intended for use by men. Women cannot obtain this medication. Additionally, if a man sees a doctor before taking this medication, use it. As a result, you might not experience any side effects from the medication. Meals can be taken with or without this medication. The effects of this medication take 36 hours to manifest. Steer clear of alcohol and fatty meals when taking this medication.