Fildena is a medication that contains sildenafil citrate, which is the same active ingredient found in Viagra. Its main use is for treating erectile dysfunction (ED) in men. It works by increasing blood flow to the penis during sexual stimulation, helping to FILDENA and maintain an erection. A few important points about Fildena: It does not increase sexual desire; it only helps with the physical ability to get an erection. Typically, it’s taken 30 minutes to 1 hour before sexual activity. It should not be taken more than once a day. People with heart problems, certain blood pressure conditions, or who are taking nitrates should avoid it. If you want, I can also explain the different strengths of Fildena and how they affect its use.