PMID- 33206011 OWN - NLM STAT- MEDLINE DCOM- 20211029 LR - 20211029 IS - 1747-4132 (Electronic) IS - 1747-4124 (Linking) VI - 15 IP - 3 DP - 2021 Mar TI - Open-label study to evaluate the treatment continuation rate after a dose reduction of lubiprostone due to onset of adverse events. PG - 333-342 LID - 10.1080/17474124.2021.1833714 [doi] AB - OBJECTIVE: To investigate the continuation rate with a reduced lubiprostone dose (12 mcg twice daily, BD) after the onset of adverse events (AEs) in patients with chronic constipation (CC). METHODS: In this exploratory, open-label, multicenter study, patients with CC received lubiprostone 24 mcg BD and the dose was reduced to 12 mcg BD in subjects experiencing AEs. The primary objective was the continuation rate after dose reduction due to nausea/vomiting. Secondary objectives included the continuation rate after dose reduction due to diarrhea/any AE and efficacy, including changes in number of weekly bowel movements and Bristol Stool Form Scale. RESULTS: Of the 146 patients included in the study, 42 (28.8%) received lubiprostone 12 mcg BD (dose-reduced group) due to any AE. Thirty-six (85.7%) subjects in the dose-reduced group continued treatment and completed the study. 22/27 (81.5%) and 17/19 (89.5%) patients in whom the dose was reduced due to nausea/vomiting or diarrhea, respectively, continued treatment. There was no clinically relevant difference in efficacy after dose reduction. CONCLUSION: These results suggest that treatment withdrawal due to AEs associated with lubiprostone 24 mcg BD could be minimized in patients with CC after dose reduction to 12 mcg BD, thus resulting in improved long-term outcomes. CLINICAL TRIAL REGISTRATION: Japan Registry of Clinical Trials (https://jrct.niph.go.jp/latest-detail/jRCTs031180069). FAU - Ohbayashi, Hiroyuki AU - Ohbayashi H AD - Department of Allergy and Respiratory Medicine, Tohno-Chuo Clinic , Mizunami, Gifu, Japan. FAU - Sato, Yasuo AU - Sato Y AD - Department of Gastroenterology, Sato Clinic , Shibuya- ku, Tokyo, Japan. FAU - Kiuchi, Mari AU - Kiuchi M AD - Department of Internal Medicine, Kanauchi Medical Clinic , Shinjuku- ku, Tokyo, Japan. FAU - Asano, Takamitsu AU - Asano T AD - Department of Allergy and Respiratory Medicine, Tohno-Chuo Clinic , Mizunami, Gifu, Japan. FAU - Nagazumi, Atsushi AU - Nagazumi A AD - Department of Internal Medicine, Kanauchi Medical Clinic , Shinjuku- ku, Tokyo, Japan. FAU - Kimura, Takazumi AU - Kimura T AD - Department of Gastroenterology, Kimuranaika-ichonaika , Yokohama, Kanagawa, Japan. LA - eng PT - Clinical Study PT - Journal Article PT - Multicenter Study DEP - 20201118 PL - England TA - Expert Rev Gastroenterol Hepatol JT - Expert review of gastroenterology & hepatology JID - 101278199 RN - 0 (Chloride Channel Agonists) RN - 7662KG2R6K (Lubiprostone) SB - IM MH - Adult MH - Aged MH - Chloride Channel Agonists/*adverse effects/therapeutic use MH - Chronic Disease MH - Constipation/*drug therapy MH - Diarrhea/chemically induced MH - Drug Tapering MH - Female MH - Humans MH - Lubiprostone/*adverse effects/therapeutic use MH - Male MH - Middle Aged MH - Nausea/chemically induced MH - Vomiting/chemically induced MH - Withholding Treatment OTO - NOTNLM OT - Lubiprostone OT - adverse events OT - chronic constipation OT - nausea OT - vomiting EDAT- 2020/11/19 06:00 MHDA- 2021/10/30 06:00 CRDT- 2020/11/18 12:11 PHST- 2020/11/19 06:00 [pubmed] PHST- 2021/10/30 06:00 [medline] PHST- 2020/11/18 12:11 [entrez] AID - 10.1080/17474124.2021.1833714 [doi] PST - ppublish SO - Expert Rev Gastroenterol Hepatol. 2021 Mar;15(3):333-342. doi: 10.1080/17474124.2021.1833714. Epub 2020 Nov 18.