Yes; other herbs too. Yes, marijuana can be very helpful for muscle spasms and menstrual cramps. Some strains are more effective than others. Many other herbs are also effective, including cramp bark (called that for good reason). Valerian, black cohosh, skullcap and dong quai. See http://www.Herbaled.Org/education/articles/menstrual.Html & http://www.Naturalnews.Com/022969_chinese_medicine_menstrual_pain.Html.
Anandimide . Brain produces its own drugs watch my utube god has great drug factory called your brain and genetically you have all it right here u may have some dysregulation by genetic or environmental causes so by taking it from outside may causes more depletion of internal supply by shutting down of your own supply production u have to learn supply and demand system of brain it is like market supply mj no.