Difficulty getting an erection during sex. That means you are suffering from erectile dysfunction disorder. Kamagra oral jelly (sildenafil citrate) is used for this condition. The effect of this jelly lasts for 4 to 6 hours. Do not break or chew this medicine and take it by mouth with water. You should take this jelly as per your doctor's advice. You can take this jelly before or after meals. Do not consume alcoholic beverages or fatty foods with this jelly. This jelly is only taken by men above 18 years of age. For more information, visit pharmev.com.