What special precautions should I follow? Keep out of the reach of children. If too much is used, the chance of side effects is increased. And yes, they have several different flavored Kamagra Oral Jelly packs available, including orange, vanilla and chocolate. Remove the cap by pushing it down and twisting it counter-clockwise. Children younger than 1 year of age—Use and dose must be determined by your doctor.Viagra: This drug is used to treat ED. With ED, you’re unable to get or maintain an erection. Revatio: This drug is used to treat PAH. With PAH, the blood pressure in your lungs is . Descriptions Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called phosphodiesterase . Generic name: sildenafil (oral) [ sil-DEN-a-fil ] Brand names: Revatio, Viagra Drug classes: Agents for pulmonary hypertension, Impotence agents. Medically reviewed by Kaci .