Click Here To Buy Now Sildenafil 200 is a high-dose medication used to treat erectile dysfunction (ED). It contains 200 mg of sildenafil citrate, which is the same active ingredient found in .sildenafil 200 is a potent dose of sildenafil citrate, generally used when lower doses (like 50 mg or 100 mg) are not effective. It should be taken approximately 30 to 60 minutes before sexual activity.