I am doing some Pe and many of the things I do requires me to keep a hard on for an entended amount of time. (such as jelqing and clamping). I don't have a problem getting it up, but keeping it up is difficult. I have used porn and that is okay but not a steady source. I have tried some cialias and that does the trick, but is much too expensive to use on a daily basis. Does anyone know of any over the counter pills or medication I could use to help me stay hard. (Something that works like viagara or cialias) that does not cost the same as the price of a HUMMER?