This disclosure relates to dosage forms (e.g., solid dosage forms) comprisinga drug-containing emulsion, adrug-containing micro-emulsion, a self-emulsifying oil composition, or a self-microemulsifying oil composition, wherein eachcomprises a weakly ionizable drug and a pH modifier. Also provided arepharmaceutical dosage forms (e.g., solid dosage forms) andmethods of preparing same.