424 / | HD | DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS |
400 | DF | PREPARATIONS CHARACTERIZED BY SPECIAL PHYSICAL FORM {12} |
464 | DF | .~ Tablets, lozenges, or pills {5} |
468 | DF | .~.~ Sustained or differential release type {3} |
472 | DF | .~.~.~ Layered unitary dosage forms {1} |
473 | .~.~.~.~ With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.) |