Intrauterine insemination (IUI), like most other fertility treatments, typically relies on medications to stimulate the production and release of eggs. Usually, Clomid (or its generic version clomiphene citrate) is the first drug prescribed to women who do not ovulate regularly. It is inexpensive and often effective. However, not everyone responds to it or can tolerate its side effects. In such cases, Clomid can be replaced with injectable medications to encourage the formation and ovulation of eggs.