in a randomized , double-bind , parallel , multi-clinic study , the safety and efficacy of enprostil ( 35 micrograms twice daily ) and ranitidine ( 150 mg twice daily ) were compared in the treatment of active gastric ulcer in 93 outpatients ( 47 enprostil-treated patients and 46 ranitidine ) .
C0038358
gastric ulcer
C0034665
ranitidine