IUI involves collection of husband’s semen, sperm washing in the laboratory, and insemination of the washed semen into the womb around the ovulation time.

Ovarian stimulation in the form of oral fertility drugs is usually given to increase the success.
Information on Oral Fertility Drug and Intrauterine Insemination

Very occasionally, gonadotrophin will be started.
Information on Ovarian Stimulation with Gonadotrophin and Intrauterine Insemination