Click On Our Side Fildena 150 is a medication used to treat erectile dysfunction (ED). It contains 150 mg of sildenafil citrate, which is a moderate to high dose of the active ingredient found in and other similar medications. Each tablet contains 150 mg of sildenafil citrate. It’s typically taken about 30-60 minutes before planned sexual activity. It should be used no more than once a day to avoid potential side effects and complications.