| Human papillomavirus 16 | Not Available | 1 | 0 | Details |
| Human Platelet-derived Growth Factor | Not Available | 1 | 3 | Details |
| Human Rabies Immune Globulins | Not Available | 1 | 1 | Details |
| Human Serum Albumin | Not Available | 2 | 6 | Details |
| Human Tetanus Immune Globulins | Not Available | 1 | 1 | Details |
| Human Varicella Zoster Immune Globulins | Not Available | 1 | 0 | Details |
| Humanized Monoclonal Antibody Fragment | Not Available | 1 | 0 | Details |
| Hyaluronoglucosaminidase, antagonists & inhibitors | Not Available | 2 | 4 | Details |
| Hydantoins | Compounds based on imidazolidine dione. Some derivatives are ANTICONVULSANTS. | 10 | 78 | Details |
| Hydrastis | Not Available | 1 | 6 | Details |
| Hydrazides | Not Available | 1 | 14 | Details |
| Hydrazines | Substituted derivatives of hydrazine (formula H2N-NH2). | 22 | 71 | Details |
| Hydrazinophthalazine Derivatives | Not Available | 4 | 13 | Details |
| Hydrazinophthalazine Derivatives and Diuretics | Not Available | 3 | 9 | Details |
| Hydrazones | Compounds of the general formula R:N.NR2, as resulting from the action of hydrazines wi... more | 2 | 5 | Details |
| Hydrocarbons, Acyclic | Organic compounds composed exclusively of carbon and hydrogen where no carbon atoms joi... more | 140 | 500 | Details |
| Hydrocarbons, Brominated | Hydrocarbon compounds with one or more HYDROGEN atoms substituted with BROMINE. | 2 | 4 | Details |
| Hydrocarbons, Chlorinated | Hydrocarbon compounds with one or more of the hydrogens replaced by CHLORINE. | 23 | 82 | Details |
| Hydrocarbons, Fluorinated | Inert liquid or gaseous halocarbon compounds in which FLUORINE replaces some or all HYD... more | 36 | 91 | Details |
| Hydrocarbons, Halogenated | Hydrocarbon compounds with one or more HYDROGEN atoms substituted with HALOGENS. | 110 | 311 | Details |
| Hydrocarbons, Iodinated | Hydrocarbon compounds with one or more HYDROGEN atoms substituted with IODINE. | 14 | 9 | Details |
| Hydrocortisone and derivatives | The main glucocorticoid secreted by the ADRENAL CORTEX. Its synthetic counterpart is us... more | 9 | 133 | Details |
| Hydrogen Sulfide | A flammable, poisonous gas with a characteristic odor of rotten eggs. It is used in the... more | 30 | 66 | Details |
| Hydrolases | Any member of the class of enzymes that catalyze the cleavage of the substrate and the ... more | 120 | 205 | Details |
| Hydrolytic Lysosomal Cholesteryl Ester-specific Enzyme | Not Available | 1 | 1 | Details |