IRCT2013091614677N1 IRCT 2013-10-24 Behavioral Sciences resaerch Cener Effect of on premature ejaculation PEC The effect of caffeine in comparison to conventional squeeze technique on controlling men with premature ejaculation, a Randomized Controlled Trial 2013-10-10 anticipated 78 Complete https://irct.ir/trial/14236 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Other design features: -. N/A Premature Ejaculation. Intervention 1: Group 3: intervention with placebo in this group identical tablets to Caffeine (without any effective content) are used. Intervention 2: Group 1: 50mg caffeine was administered on demand on every sexual contact with a single partner (married men with their wives) 2 hours before intercourse for 2 weeks and their ILET was assessed after this period. Intervention 3: Group 2: using conventional squeezing technique. which is taught to each patient individually and the IELT is measured after 2 weeks of practice.