| Polyketides | Natural compounds containing alternating carbonyl and methylene groups (beta-polyketone... more | 66 | 196 | Details |
| Polymerase Acidic Endonuclease Inhibitors | Not Available | 2 | 8 | Details |
| Polymers | Compounds formed by the joining of smaller, usually repeating, units linked by covalent... more | 131 | 281 | Details |
| Polymyxin-class Antibacterial | Not Available | 2 | 5 | Details |
| Polymyxins | Basic lipopeptide antibiotic group obtained from Bacillus polymyxa. They affect the cel... more | 3 | 7 | Details |
| Polynucleotides | Complex compounds of high molecular weight occurring in living cells. These are basical... more | 77 | 96 | Details |
| Polyphenols | A large class of organic compounds having more than one PHENOL group. | 1 | 36 | Details |
| Polyphosphates | Linear polymers in which orthophosphate residues are linked with energy-rich phosphoanh... more | 6 | 16 | Details |
| Polyporales | An order of fungi in the phylum BASIDIOMYCOTA having macroscopic basidiocarps. The memb... more | 0 | 0 | Details |
| Polyproteins | Proteins which are synthesized as a single polymer and then cleaved into several distin... more | 1 | 3 | Details |
| Polyribonucleotides | A group of 13 or more ribonucleotides in which the phosphate residues of each ribonucle... more | 3 | 3 | Details |
| Polysaccharide-Lyases | A group of carbon-oxygen lyases. These enzymes catalyze the breakage of a carbon-oxygen... more | 4 | 7 | Details |
| Polysaccharides | A broad class of substances encompassing all those that do not include carbon and its d... more | 130 | 339 | Details |
| Polysaccharides, Bacterial | Polysaccharides found in bacteria and in capsules thereof. | 5 | 10 | Details |
| Polystyrene Sulfonates | Polystyrene sulfonates are polymers derived from polystyrene by the addition of sulfona... more | 2 | 4 | Details |
| Polystyrenes | Polymerized forms of styrene used as a biocompatible material, especially in dentistry.... more | 1 | 1 | Details |
| Polyunsaturated Alkamides | Amides composed of unsaturated aliphatic FATTY ACIDS linked with AMINES by an amide bon... more | 4 | 18 | Details |
| Polyvalent cation containing laxatives, antacids, oral supplements | This category is comprised of polyvalent cation-containing drugs that may interfere wit... more | 13 | 104 | Details |
| Polyvinyls | POLYMERS derived from the monomer VINYL COMPOUNDS. | 4 | 3 | Details |
| Polyynes | Hydrocarbons that contain multiple ACETYLENE groups, i.e., more than one triple bond; o... more | 1 | 0 | Details |
| Porcine somatotropin derivatives | Not Available | 0 | 0 | Details |
| Pore Forming Cytotoxic Proteins | Proteins secreted from an organism which form membrane-spanning pores in target cells t... more | 10 | 16 | Details |
| Porifera | Not Available | 2 | 6 | Details |
| Porphobilinogen Synthase, antagonists & inhibitors | Not Available | 2 | 5 | Details |
| Porphyrias | Not Available | 1 | 2 | Details |