Drug-induced menstrual changes
Amenorrhea is associated with progesterone and some chemotherapy drugs. Intermenstrual bleeding is associated with progestin-only and combination oral birth control pills as well as estrogen replacement therapy.
Menstrual bleeding has also been linked to use of progesterone and estrogen, prostaglandin agents, intrauterine devices (IUDs), selective serotonin reuptake inhibitors (SSRIs), and methadone therapy. Irregular heavy menstrual bleeding has been linked to use of ginseng and recombinant human relaxin. Drugs that induce hyperprolactinemia are known to cause amenorrhea and galactorrhea. These include antipsychotics, antidepressants, antihypertensives, opioids, and some gastrointestinal medications.
T50.995A – Adverse effect of other drugs, medicaments and biological substances, initial encounter
386804004 – Disorder of menstruation