A quantitative review and meta-models of the variability and factors affecting oral drug absorption—part I: gastrointestinal pH

AY Abuhelwa, DJR Foster, RN Upton - The AAPS journal, 2016 - Springer
This study aimed to conduct a quantitative meta-analysis for the values of, and variability in,
gastrointestinal (GI) pH in the different GI segments; characterize the effect of food on the …

Food, gastrointestinal pH, and models of oral drug absorption

AY Abuhelwa, DB Williams, RN Upton… - European journal of …, 2017 - Elsevier
This article reviews the major physiological and physicochemical principles of the effect of
food and gastrointestinal (GI) pH on the absorption and bioavailability of oral drugs, and the …

A new system for the prediction of drug absorption using a pHcontrolled Caco2 model: Evaluation of pHdependent soluble drug absorption and pHrelated …

X He, S Kadomura, Y Takekuma, M Sugawara… - Journal of …, 2004 - Elsevier
One purpose of this study was to develop a new system for the prediction of pHdependent
soluble drug absorption that takes into account the physiological condition of the …

Role of physiological intestinal water in oral absorption

SC Sutton - The AAPS journal, 2009 - Springer
Water volume has impact when the compound has low aqueous solubility. For example, the
absorption of compounds with a Biopharmaceutics Classification System class 2 or 4 is …

Effects of gastric pH on oral drug absorption: in vitro assessment using a dissolution/permeation system reflecting the gastric dissolution process

M Kataoka, M Fukahori, A Ikemura, A Kubota… - European journal of …, 2016 - Elsevier
The aim of the present study was to evaluate the effects of gastric pH on the oral absorption
of poorly water-soluble drugs using an in vitro system. A dissolution/permeation system (D/P …

Improving dissolution behavior and oral absorption of drugs with pH-dependent solubility using ph modifiers: a physiologically realistic mass transport analysis

N Salehi, G Kuminek, J Al-Gousous… - Molecular …, 2021 - ACS Publications
Orally dosed drugs must dissolve in the gastrointestinal (GI) tract before being absorbed
through the epithelial cell membrane. In vivo drug dissolution depends on the GI tract's …

Predicting the changes in oral absorption of weak base drugs under elevated gastric pH using an in vitro–in silico–in vivo approach: case examples—dipyridamole …

A Kambayashi, JB Dressman - Journal of pharmaceutical sciences, 2019 - Elsevier
The aim of the current research was to develop an in silico oral absorption model coupled
with an in vitro dissolution/precipitation testing to predict gastric pH-dependent drug-drug …

Food effects on oral drug absorption: application of physiologically-based pharmacokinetic modeling as a predictive tool

L Cheng, H Wong - Pharmaceutics, 2020 - mdpi.com
The bioavailability of an orally administered small molecule is often dictated by drug-specific
physicochemical characteristics and is influenced by many biological processes. For …

Impaired drug absorption due to high stomach pH: a review of strategies for mitigation of such effect to enable pharmaceutical product development

A Mitra, F Kesisoglou - Molecular pharmaceutics, 2013 - ACS Publications
Published reports have clearly shown that weakly basic drugs which have low solubility at
high pH could have impaired absorption in patients with high gastric pH thus leading to …

Drug, meal and formulation interactions influencing drug absorption after oral administration: clinical implications

D Fleisher, C Li, Y Zhou, LH Pao, A Karim - Clinical pharmacokinetics, 1999 - Springer
Drug-drug, drug-formulation and drug-meal interactions are of clinical concern for orally
administered drugs that possess a narrow therapeutic index. This review presents the …