Fildena 100 mg is manufactured by Fortune Healthcare, a pharmaceutical company based in India. Fortune Healthcare specializes in producing generic medications, including those for erectile dysfunction, like Fildena, which contains sildenafil, the active ingredient also found in Viagra. It’s important to ensure that any medication you take is sourced from reputable suppliers to ensure its safety and effectiveness. Sildenafil works by increasing blood flow to the penis during sexual arousal, helping men achieve and maintain an erection. The effects of Fildena 100 mg can last 4 to 6 hours, but this may vary based on the individual.