期刊
AMERICAN JOURNAL OF GASTROENTEROLOGY
卷 117, 期 7, 页码 1158-1161出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.14309/ajg.0000000000001735
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资金
- Phathom Pharmaceuticals (BuffaloGrove, IL)
The study on vonoprazan and lansoprazole in US subjects showed that vonoprazan had more rapid and potent inhibition of intragastric acidity compared to lansoprazole. The research demonstrated that vonoprazan was more effective in maintaining a higher proportion of 24-hour periods with intragastric pH > 4 on days 1 and 7, when compared to lansoprazole.
INTRODUCTION: We assessed pharmacodynamics and pharmacokinetics of a potassium-competitive acid blocker and proton pump inhibitor in US subjects. METHODS: Healthy adults were randomized to 7-day periods of vonoprazan 20 mg once daily followed by lansoprazole 30 mg once daily or the reverse order, separated by >= 7 days of washout. RESULTS: Vonoprazan (N = 40) had higher proportions of 24-hour periods with intragastric pH > 4 than lansoprazole (N = 41,38) on day 1 (62.4% vs 22.6%, P < 0.0001) and day 7 (87.8% vs 42.3%, P < 0.0001). Separation in pH started similar to 2.5 hours after the first dose. DISCUSSION: Vonoprazan provided more rapid and potent inhibition of intragastric acidity than lansoprazole in US subjects.
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