title: Effervescent ASA versus solid ASA in the treatment of tension headache. A double-blind, placebo controlled study.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001241:Aspirin / Q000008:administration & dosage*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006261:Headache / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D013607:Tablets
chemical_list: D013607:Tablets; D001241:Aspirin