Add to the effect of diuretics, inulin & insulin secretagogues eg, sulphonylureas. Decreased exposure w/ enzyme inducers eg, St. John's wort, rifampicin, barbiturates, phenytoin, carbamazepine, ritonavir, efavirenz. Reduced exposure w/ cholestyramine. Increased AUC & C
max of digoxin. Increased conc of dabigatran.