Lejam 60 mg 4 Tablets is a potent serotonin reuptake inhibitor drug that has been developed primarily for the treatment of premature ejaculation. It improves the time it takes to ejaculate and may enhance ejaculation control. It begins to act very quickly, so it is taken when you plan to have sex, rather than every day. You've got to take it for 1-3 hours before having sex.