One medication for erectile dysfunction is Kamagra Oral Jelly. A prescription and medical advice are typically needed before taking sildenafil, a medication used to treat erectile dysfunction.  It is meant to assist men in getting and keeping an erection strong enough for intercourse. Taken approximately half an hour before engaging in sexual activities, its effects can linger for up to four hours. The contents of the sachet are plenty to ingest, or you can dissolve it in any non-alcoholic beverage to make it into a drink. The medication needs to be taken roughly thirty minutes prior to the planned interaction.