Stomal ulcer occurs in about 5% of patients after biliopancreatic diversion (BPD). Seven females were given 150 or 300 mg of ranitidine orally. Blood samples found a pharmacologically effective concentration from 0.5 to 8 h after both doses. Intestinal absorption of ranitidine is maintained after BPD.
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Franco Adami, G., Gandolfo, P., Esposito, M. et al. Orally-administered Serum Ranitidine Concentration after Biliopancreatic Diversion for Obesity. OBES SURG 1, 293–294 (1991). https://doi.org/10.1381/096089291765561024
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DOI: https://doi.org/10.1381/096089291765561024