Male erectile dysfunction (ED) is commonly treated using the drug filagre. It includes the same active ingredient as Viagra, sildenafil citrate, which helps men get and keep a hard erection during sexual activity by boosting blood flow to the penis. Depending on personal needs and preferences, Filagra comes in a variety of strengths and formats, such as pills and oral jellies. Its effects can last up to 4 or 6 hours, and it is usually taken 30 to 60 minutes before sexual activity. Like all ED drugs, Filagra should only be taken under a doctor's supervision, particularly for people who are also receiving treatment for another illness or have pre-existing medical issues.