The article describes the combined result as increased relative dehydration risk and says adequate water intake becomes non-negotiable when the two overlap
Maintain your current dose when switching
Arakawa M, Mita T, Azuma K, Ebato C, Goto H, Nomiyama T, Fujitani Y, Hirose T, Kawamori R, Watada H: Inhibition of monocyte adhesion to endothelial cells and attenuation of atherosclerotic lesion by a glucagon-like peptide-1 receptor agonist, exendin-4
declares having received research grants from Boehringer Ingelheim, Merck, Mylan Pharmaceuticals, Novo Nordisk, Pfizer and Sanofi US Services
Epilepsia 1994, 35: 1005-1015