The best way to avoid side effects of Kamagra jelly is to follow the instructions. Take the dosage as prescribed by your doctor. Usually, one Kamagra oral jelly tablet contains 100 mg of sildenafil citrate. The tablets do not need water. The jelly will dissolve in the mouth and begin working within 15 minutes. Because it works faster than pills, men who struggle to swallow pills should not skip meals. If you do take a tablet, however, you should be aware that the higher dose of sildenafil may cause serious side effects, including priapism - a condition that can damage your penis.