Filagra is a medication that is sometimes used to treat erectile dysfunction (ED) in men. It contains the active ingredient Sildenafil citrate, which is a phosphodiesterase type 5 (PDE5) inhibitor. Here are some key points about Filagra: Filagra is primarily prescribed to help men who have difficulty achieving or maintaining an erection sufficient for sexual activity. It works by improving blood flow to the penis when a person is sexually aroused. The active ingredient in Filagra, Sildenafil citrate, is the same as in the well-known ED medication Viagra. It is known for its ability to relax the smooth muscles in the blood vessels of the penis, allowing for increased blood flow and the achievement of an erection.  Filagra is available in various dosage strengths, allowing healthcare providers to tailor the treatment to an individual's specific needs. The appropriate dosage should be determined based on factors such as the severity of ED and the individual's response to the medication.