in 48 patients with giant gastric ulcers treated with ranitidine , cumulative endoscopic healing rates were : 0 % after 2 weeks , 16.7 % after 4 weeks , 50.0 % after 6 weeks , 77.1 % after 8 weeks , 85.4 % after 10 weeks , and 87.5 % after 12 weeks of treatment .
C0038358
gastric ulcers
C0034665
ranitidine