This randomized, double-blind clinical trial conducted on 48 women with primary dysmenorrhea and significant associated menstrual pains demonstrated the efficacy of topical application of essential oils containing primarily analgesic plant-based constituents, namely linalyl acetate, linalool, eucalyptol, and β-caryophyllene.
Link: Pain Relief Assessment By Aromatic Essential Oil Massage On Outpatients With Primary Dysmenorrhea: A Randomized, Double-blind Clinical Trial
Year: 2012
DOI: 10.1111/j.1447-0756.2011.01802.x
Demonstrable efficacy of cannabis for treatment of Pain (Menstrual) according to the results found in this study.
Terpenes common in cannabis such as linalool, eucalyptol, and β-caryophyllene.