IUI or Intra uterine Insemination is a technique where prepared sperm is introduced into the woman's uterus (womb) at around the time of ovulation, with the aim of getting the sperm nearer to the egg. The procedure is often combined with fertility medicines. IUI helps couples where the man has a low sperm count or poor motility (the ability of the sperm to move), as long as there are sufficient levels of healthy, motile sperm to make the treatment worthwhile. If not, IVF or ICSI will be more suitable.
Because sperm is placed directly inside the woman, IUI can also help couples who are unable to have intercourse because of disability, injury, or difficulties such as premature ejaculation. It is also recommended for women with mild endometriosis, and is often used as the first line of assisted conception treatment for couples with "unexplained infertility". Women without a male partner may also want to have IUI, as using sperm donated through a clinic has a number of advantages over self-insemination at home.