You can stop
menstrual cramps before they start, or reduce the severity of menstrual cramps, by taking OTC pain medications such as
acetaminophen, or NSAIDs which include
ibuprofen,
ketoprofen,
naproxen, and
aspirin at the first sign of pain or menstrual bleeding. Many doctors recommend taking these medications up to 24 hours before you expect your period.
Self Help for Menstrual Cramps
Medical Treatments for Menstrual Cramps
Cyclic Perimenstrual Pain and Discomfort: Nursing Management; Guidelines.Gov; http://www.guidelines.gov/summary/summary.aspx?doc_id=7199&nbr=004302&string=treatment+AND+menstrual+AND+cramps; Accessed 09/28/08.