Safety profile of Lansoprazole: the US clinical trial experience
Abstract
OBJECTIVE: Lansoprazole has undergone extensive clinical evaluation for the treatment of acid-peptic diseases. The aim of this study was to define the safety profile of lansoprazole and compare it to that of other therapeutic agents evaluated in the same controlled trials.
METHODS: The clinical safety profile of lansoprazole and comparative agents (placebo, ranitidine and omeprazole) was reviewed for 3281 patients who participated in short term (up to 8 weeks) and long term (up to 56 months) clinical trials conducted in the US. Adverse events, laboratory value changes and gastric biopsy changes that occurred during treatment were compared statistically for differences between treatments.
RESULTS: The incidence of adverse events and number of patients discontinuing treatment because of adverse events was similar for lansoprazole and comparative agents. Other than elevated serum gastrin levels, a known effect of proton pump inhibitors, no trends in laboratory changes were observed. Median values for gastrin levels remained within the normal range; about 2% of patients had gastrin levels >400 pg/ml at any time, while 500 pg/ml. Values returned to baseline levels after therapy was discontinued. No significant changes in gastric endocrine cell growth from baseline to final visit were observed, nor was there evidence of dysplasia or neoplasia.
CONCLUSION: Lansoprazole is well tolerated for both short and long term treatment of acid-related disease. The tolerability of lansoprazole…
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