The invention features pharmaceutically acceptable salts of cefdinir, including primary, secondary, and tertiary amine salts of cefdinir, and preparation methods, and pharmaceutical compositions including cefdinir. The invention also features water dispersible pharmaceutical dosage forms including cefdinir as active agent and methods for preparing the dosages. The invention also features tablet forms of cefixime characterized in that the tablets are in effervescent form. The invention also features the process for preparing effervescent tablet forms with cefdinir as active agents and pharmaceutical formulations obtained by the process.
