Kamagra Oral Jelly contains sildenafil citrate, a drug used to treat erectile dysfunction. Kamagra contains 100 mg of sildenafil citrate, the same amount as Viagra. It is still effective and Swiss studies have shown that it is as effective as Viagra. Unfortunately, the risks of using Kamagra oral gel are real.It is important to consult a legal pharmacy before taking the medicine. There are other safer alternatives to treat erectile dysfunction. One such option is PDE5 inhibitors.