INTRODUCTION

Oral delivery is the most common route of administration for drug products. All oral drug products lead to systemic and/or local action in the oral cavity and/or gastrointestinal tract. Oral drug products fall primarily into two main categories: solids and liquids. Solid oral drug products include but are not restricted to capsules, tablets, granules, and powders. Similarly, liquid oral drug products include but are not restricted to solutions, suspensions, and emulsions. The definitions and descriptions of these dosage forms and brief information about their composition and manufacturing process are found in Pharmaceutical Dosage Forms 〈1151〉.