(Vardenafil 20 mg Zhewitra oral jelly comes in sachets and is a fast-acting medicine. Zhewitra Oral Jelly is for the men who want a rock hard erection which lasts long. For treating erectile dysfunction Vardenafil 20 belongs to a group of medicines called PDE5 inhibitors. It works by relaxing the blood vessels in your penis. This allows blood to flow into the penis and produce an erection when sexually aroused. This medicine will only help get an erection if you are sexually stimulated. It is very effective but needs to be taken at least 30 minutes before sexual activity.