Kamagra Oral Jelly is the best jelly for treating sexual problems in men such as impotence, erectile dysfunction, and premature ejaculation. This jelly contains an ingredient called Sildenafil which helps in increasing the blood flow to the penile tissues in men. The effect of this jelly lasts for 4 to 6 hours. You can take this jelly before or after meals. Do not consume fatty foods or alcoholic beverages with this jelly. Take this jelly medicine as per the doctor's advice.