Radiation-Protective Agents (59) • Drugs used to protect against ionizing radiation. They are usually of interest for use in radiation therapy but have been considered for other, e.g. military, purposes. MeSH

Radiation-Protective Effect (0) see Radiation-Protective Agents

Radiation-Sensitizing Agents (104) • Drugs used to potentiate the effectiveness of radiation therapy in destroying unwanted cells. MeSH

Radiation-Sensitizing Effect (0) see Radiation-Sensitizing Agents

Radioactive Pollutants (1)

Radiocontrast Media (0) see Contrast Media

Radiopharmaceuticals (51) • Compounds that are used in medicine as sources of radiation for radiotherapy and for diagnostic purposes. They have numerous uses in research and industry. (Martindale, The Extra Pharmacopoeia, 30th ed, p1161) MeSH

Reagents (0) see Indicators and Reagents

Reducing Agents (5) • Materials that add an electron to an element or compound, that is, decrease the positiveness of its valence. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) MeSH

Renal Agents (37)

Renal Epithelial Sodium Channel Inhibitors (0) see Epithelial Sodium Channel Blockers

Reproductive Control Agents (145) • Substances used either in the prevention or facilitation of pregnancy. MeSH

Reproductive Effect (1)

Resins, Synthetic (3)

Respiratory Stimulants (0) see Respiratory System Agents

Respiratory System Agents (169) • Drugs used for their effects on the respiratory system. MeSH

Reverse Transcriptase Inhibitors (46) • Inhibitors of reverse transcriptase (RNA-DIRECTED DNA POLYMERASE), an enzyme that synthesizes DNA on an RNA template. MeSH

Reversible Inhibitors of Monoamine Oxidase (0) see Monoamine Oxidase Inhibitors

RIMA (Reversible Inhibitor of Monoamine Oxidase A) (0) see Monoamine Oxidase Inhibitors

Riot Control Agents, Chemical (12) • Chemical substances which are employed during a riot in order to control or disperse the rioting parties. MeSH

RNA Synthesis Inhibitors (0) see Nucleic Acid Synthesis Inhibitors

Rodenticides (14) • Substances used to destroy or inhibit the action of rats, mice, or other rodents. MeSH

Rubefacients (0) see Irritants