The substance will determine the length. Kamagara Jelly effects begin to manifest after around 30 minutes and continue for about 4 hours. Take Kamagara Jelly at least 2 hours before your planned sexual activity. The effects could linger for up to 36 hours after consuming it. If you use a prescription drug for erectile dysfunction (ED), you should take every measure to ensure that it is operating as intended. Learn all you can about how to use your medication in a few minutes. It will eventually pay off in the bedroom.