·  B >   DRUG GROUPS

·  N >   ALCOHOL

·  N >   ANTIDEPRESSANTS

·  N >   CAFFEINE AND OTHER XANTHINES

·  N >   CANNABIS AND CANNABINOIDS

·  N >   COCA PLANT AND PREPARATIONS

·  N >   DRUG ANALYSIS

·  N >   DRUG ANTAGONISTS

·  N >   DRUG CLASSIFICATION

·  N >   DRUG INGREDIENTS

·  N >   DRUG USE

·  N >   HALLUCINOGENS

·  N >   MAJOR TRANQUILIZERS

·  N >   MEDICAL GASES

·  N >   OPIUM PLANTS AND PREPARATIONS

·  N >   SEDATIVE HYPNOTICS AND MINOR TRANQUILIZERS

·  N >   STIMULANT DRUGS

·  N >   TOBACCO

·  R >   NON PSYCHOACTIVE DRUGS

·  R >   PHARMACOLOGY

·  R >   VOLATILE SUBSTANCES

·  R >   ENDOGENOUS DRUGS