Fildena CT 100 as a specific product. The FDA lists approved sildenafil products such as Viagra, but that does not mean every sildenafil brand is FDA-approved. FDA Fildena CT 100  Do not assume it is FDA-approved. Sildenafil: The active ingredient is approved by the FDA for erectile dysfunction in specific prescription products. Safety: FDA approval of sildenafil does not guarantee the quality, authenticity or safety of a particular Fildena tablet. You can check the official FDA Drugs@FDA database . My advice: If you're buying Fildena CT 100 in India, verify the manufacturer, packaging and applicable Indian regulatory authorization with a licensed pharmacist before using it.