| Resource | Count |
|---|
| Anti-Bacterial Agents | 128 |
| Antineoplastic Agents | 123 |
| Antihypertensive Agents | 73 |
| Enzyme Inhibitors | 57 |
| Immunosuppressive Agents | 56 |
| Anti-Arrhythmia Agents | 55 |
| Supplements | 54 |
| Dietary Supplements | 52 |
| Micronutrients | 49 |
| Anti-Inflammatory Agents, Non-Steroidal | 45 |
| Vasodilator Agents | 45 |
| Hypnotics and Sedatives | 43 |
| Anti-Infective Agents | 40 |
| Antifungal Agents | 40 |
| Antipsychotic Agents | 40 |
| Anticonvulsants | 38 |
| Cephalosporins | 34 |
| Histamine Antagonists | 31 |
| Histamine H1 Antagonists | 31 |
| Antiviral Agents | 29 |
| Antidepressive Agents | 28 |
| Diagnostic Agents | 28 |
| Sympathomimetics | 28 |
| Analgesics, Opioid | 25 |
| Anti-Allergic Agents | 25 |
| Dopamine Antagonists | 25 |
| Muscarinic Antagonists | 25 |
| Anti-Inflammatory Agents | 24 |
| Bronchodilator Agents | 24 |
| Antidyskinetics | 23 |
| Antibiotics | 22 |
| Antiemetics | 22 |
| Penicillins | 22 |
| Antidiabetic Agents | 21 |
| Bone Density Conservation Agents | 21 |
| Hypoglycemic Agents | 21 |
| Antiparkinson Agents | 20 |
| Antithrombins | 20 |
| Narcotics | 20 |
| Anti-HIV Agents | 19 |
| Benzodiazepines | 19 |
| Diuretics | 19 |
| Platelet Aggregation Inhibitors | 19 |
| Serotonin Receptor Agonists | 19 |
| Adrenergic Uptake Inhibitors | 18 |
| Anti-Anxiety Agents | 18 |
| Antineoplastic Agents, Hormonal | 18 |
| Antispasmodics | 18 |
| Calcium Channel Blockers | 18 |
| GABA Modulators | 18 |
| Antirheumatic Agents | 17 |
| Cyclooxygenase Inhibitors | 17 |
| Hypolipidemic Agents | 17 |
| Serotonin Uptake Inhibitors | 17 |
| Anesthetics, Local | 16 |
| Antimalarials | 16 |
| Antimetabolites | 16 |
| Adjuvants, Anesthesia | 15 |
| Anticoagulants | 15 |
| Cardiotonic Agents | 15 |
| Cholinergic Antagonists | 15 |
| Contrast Media | 15 |
| Dermatologic Agents | 15 |
| Ophthalmics | 15 |
| Reverse Transcriptase Inhibitors | 15 |
| Vitamin B Complex | 15 |
| Vitamins | 15 |
| Anti-Ulcer Agents | 14 |
| Antihypocalcemic Agents | 14 |
| Appetite Depressants | 14 |
| Central Nervous System Stimulants | 14 |
| Glucocorticoids | 14 |
| Serotonin Antagonists | 14 |
| Sympatholytics | 14 |
| Adrenergic beta-Antagonists | 13 |
| Analgesics | 13 |
| Antidepressive Agents, Second-Generation | 13 |
| Antimetabolites, Antineoplastic | 13 |
| Antiprotozoal Agents | 13 |
| Antipruritics | 13 |
| Corticosteroids | 13 |
| Fibrinolytic Agents | 13 |
| Nucleic Acid Synthesis Inhibitors | 13 |
| Protein Synthesis Inhibitors | 13 |
| Vasoconstrictor Agents | 13 |
| Analgesics, Non-Narcotic | 12 |
| Antibiotics, Antineoplastic | 12 |
| Antitussive Agents | 12 |
| Gastrointestinal Agents | 12 |
| Non-Essential Amino Acids | 12 |
| Parasympatholytics | 12 |
| Sulfonamides | 12 |
| Adrenergic beta-2 Receptor Agonists | 11 |
| Aminoglycosides | 11 |
| Anesthetics, Intravenous | 11 |
| Anti-Infective Agents, Local | 11 |
| Antineoplastic Agents, Alkylating | 11 |
| Antineoplastic Agents, Phytogenic | 11 |
| Antioxidants | 11 |
| Chelating Agents | 11 |
| Dopamine Uptake Inhibitors | 11 |
| Muscle Relaxants, Central | 11 |
| Phenothiazines | 11 |
| Quinolones | 11 |
| Sodium Chloride Symporter Inhibitors | 11 |
| Adrenergic alpha-Antagonists | 10 |
| Angiotensin-Converting Enzyme Inhibitors | 10 |
| Contraceptive Agents | 10 |
| Enzyme Replacement Agents | 10 |
| Hormone Replacement Agents | 10 |
| Macrolides | 10 |
| Neuroprotective Agents | 10 |
| Stimulants | 10 |
| Tetracyclines | 10 |
| Tubulin Modulators | 10 |
| Voltage-Gated Sodium Channel Blockers | 10 |
| Adrenergic alpha-2 Receptor Agonists | 9 |
| Anti-Infective Agents, Urinary | 9 |
| Cholinesterase Inhibitors | 9 |
| Dopamine Agonists | 9 |
| Muscle relaxant, Skeletal | 9 |
| Neuromuscular Agents | 9 |
| Nootropic Agents | 9 |
| Steroids | 9 |
| Adjuvants | 8 |
| Adrenergic Agents | 8 |
| Adrenergic alpha-1 Receptor Antagonists | 8 |
| Adrenergic beta-1 Receptor Antagonists | 8 |
| Amino Acids, Essential | 8 |
| Anti-anemic Agents | 8 |
| Antidepressive Agents, Tricyclic | 8 |
| Antidotes | 8 |
| Antithyroid Agents | 8 |
| Barbiturates | 8 |
| Dopamine Agents | 8 |
| Monoclonal antibodies | 8 |
| Narcotic Antagonists | 8 |
| Oxytocics | 8 |
| Phosphodiesterase Inhibitors | 8 |
| Prodrugs | 8 |
| Adjuvants, Immunologic | 7 |
| Anti-Asthmatic Agents | 7 |
| Anti-migraine Agents | 7 |
| Anticholesteremic Agents | 7 |
| Antipsoriatic Agents | 7 |
| Antitubercular Agents | 7 |
| Bisphosphonates | 7 |
| Contraceptives, Oral, Synthetic | 7 |
| Estrogen Antagonists | 7 |
| Excitatory Amino Acid Antagonists | 7 |
| Histamine H1 Antagonists, Non-Sedating | 7 |
| Hydroxymethylglutaryl-CoA Reductase Inhibitors | 7 |
| Monoamine Oxidase Inhibitors | 7 |
| Photosensitizing Agents | 7 |
| Protein Kinase Inhibitors | 7 |
| Radiation-Sensitizing Agents | 7 |
| Thrombolytic Agents | 7 |
| Tocolytic Agents | 7 |
| Vaccines | 7 |
| 14-alpha Demethylase Inhibitors | 6 |
| Anabolic Agents | 6 |
| Anesthetics, Inhalation | 6 |
| Angiogenesis Inhibitors | 6 |
| Angiotensin Receptor Antagonists | 6 |
| Anti-glaucoma Agents | 6 |
| Antibiotics, Antitubercular | 6 |
| Cardiovascular Agents | 6 |
| Fertility Agents | 6 |
| Free Radical Scavengers | 6 |
| Immunologic Factors | 6 |
| Indicators and Reagents | 6 |
| Insecticides | 6 |
| Keratolytic Agents | 6 |
| Leprostatic Agents | 6 |
| Mydriatics | 6 |
| Nicotinic Antagonists | 6 |
| Adrenergic alpha-1 Receptor Agonists | 5 |
| Anesthetics | 5 |
| Anti-Obesity Agents | 5 |
| Antinematodal Agents | 5 |
| Aromatase Inhibitors | 5 |
| Dipeptidyl-Peptidase IV Inhibitors | 5 |
| Enzymes | 5 |
| Estrogens | 5 |
| Folic Acid Antagonists | 5 |
| HIV Protease Inhibitors | 5 |
| Hematinics | 5 |
| Heparins | 5 |
| Histamine H2 Antagonists | 5 |
| Lipoxygenase Inhibitors | 5 |
| Sodium Channel Blockers | 5 |
| Vitamin D | 5 |
| Adrenergic alpha-Agonists | 4 |
| Adrenergic beta-Agonists | 4 |
| Amebicides | 4 |
| Angiotensin II Type 1 Receptor Blockers | 4 |
| Antiresorptives | 4 |
| Central Nervous System Depressants | 4 |
| Cholinergic Agents | 4 |
| Coagulants | 4 |
| Cross-Linking Reagents | 4 |
| EENT Preparations | 4 |
| Expectorants | 4 |
| Gout Suppressants | 4 |
| Hallucinogens | 4 |
| Muscle Relaxants, Genitourinary | 4 |
| Nasal Decongestants | 4 |
| Neuromuscular Nondepolarizing Agents | 4 |
| Parasympathomimetics | 4 |
| Progestins | 4 |
| Proton Pump Inhibitors | 4 |
| Sclerosing Solutions | 4 |
| Selective Estrogen Receptor Modulators | 4 |
| Solvents | 4 |
| Surface-Active Agents | 4 |
| Thrombotic Agents | 4 |
| Abortifacient Agents, Nonsteroidal | 3 |
| Adrenergic Antagonists | 3 |
| Alcohol Deterrents | 3 |
| Alkylating Agents | 3 |
| Androgens | 3 |
| Antacids | 3 |
| Anthelmintics | 3 |
| Anti-Incontinence Agents | 3 |
| Antianginal Agents | 3 |
| Anticarcinogenic Agents | 3 |
| Antidiarrheals | 3 |
| Antifibrinolytic Agents | 3 |
| Antimanic Agents | 3 |
| Antimycobacterials | 3 |
| Antineoplastics, Adjuncts | 3 |
| Antiscabies Agents | 3 |
| Carbonic Anhydrase Inhibitors | 3 |
| Carcinogens | 3 |
| Cathartics | 3 |
| Cholesterol Absorption Inhibitors | 3 |
| Coccidiostats | 3 |
| Cyclooxygenase 2 Inhibitors | 3 |
| Detergents | 3 |
| Dihydropyridines | 3 |
| Disinfectants | 3 |
| Estrogens, Non-Steroidal | 3 |
| Fertility Agents, Female | 3 |
| Fluorescent Dyes | 3 |
| Hematopoietic Agents | 3 |
| Histone Deacetylase Inhibitors | 3 |
| Hormone Antagonists | 3 |
| Iron Chelating Agents | 3 |
| Leukotriene Antagonists | 3 |
| Mineralocorticoid Receptor Antagonists | 3 |
| Miotics | 3 |
| Muscle Relaxants, Respiratory | 3 |
| Mutagens | 3 |
| Neurotransmitter Uptake Inhibitors | 3 |
| Nicotinic Agonists | 3 |
| Phosphodiesterase 3 Inhibitors | 3 |
| Potassium Channel Blockers | 3 |
| Prokinetic Agents | 3 |
| Protease Inhibitors | 3 |
| Purinergic P1 Receptor Antagonists | 3 |
| Radiation-Protective Agents | 3 |
| Serotonin Agents | 3 |
| Skin and Mucous Membrane Agents | 3 |
| Sodium Potassium Chloride Symporter Inhibitors | 3 |
| Teratogens | 3 |
| Topoisomerase I Inhibitors | 3 |
| Trace Elements | 3 |
| Trypanocidal Agents | 3 |
| Uricosuric Agents | 3 |
| Abortifacient Agents | 2 |
| Affinity Labels | 2 |
| Amphetamines | 2 |
| Androgen Antagonists | 2 |
| Anti-acne preparations | 2 |
| Anti-menopausal Agents | 2 |
| Anti-tocolytic Agents | 2 |
| Antibiotics, Topical | 2 |
| Antidiuretic Agents | 2 |
| Antidystonic Agents | 2 |
| Antimyasthenic Agents | 2 |
| Antineutropenic Agents | 2 |
| Antiparasitic Agents | 2 |
| Antipyretics | 2 |
| Cholagogues and Choleretics | 2 |
| Cholinergic Agonists | 2 |
| Colony-Stimulating Factors | 2 |
| Conditionally Essential Amino Acids | 2 |
| Contraceptive Agents, Female | 2 |
| Diuretics, Osmotic | 2 |
| Epithelial Sodium Channel Blockers | 2 |
| Explosive Agents | 2 |
| Fatty Acid Synthesis Inhibitors | 2 |
| GABA Agents | 2 |
| GABA Agonists | 2 |
| GABA Antagonists | 2 |
| Ganglionic Blockers | 2 |
| Hemostatics | 2 |
| Herbicides | 2 |
| Homeopathic Agents | 2 |
| Hormones | 2 |
| Ionophores | 2 |
| Labor Induction Agents | 2 |
| Mast Cell Stabilizers | 2 |
| Meglitinides | 2 |
| Mitogens | 2 |
| Myeloablative Agonists | 2 |
| Neuromuscular Blocking Agents | 2 |
| Neuromuscular Depolarizing Agents | 2 |
| Nitric Oxide Donors | 2 |
| Nucleic Acids, Nucleotides, and Nucleosides | 2 |
| Nutritional Support | 2 |
| Phosphodiesterase 5 Inhibitors | 2 |
| Prostaglandins | 2 |
| Prostaglandins, Synthetic | 2 |
| Psychotropic Drugs | 2 |
| Purine analogues | 2 |
| Renal Agents | 2 |
| Salicylates | 2 |
| Schistosomicides | 2 |
| Serine Proteinase Inhibitors | 2 |
| Serotonin 5-HT1 Receptor Agonists | 2 |
| Serum substitutes | 2 |
| Succinimides | 2 |
| Sweetening Agents | 2 |
| TNF inhibitor | 2 |
| Thioxanthenes | 2 |
| Thrombopoietic Agents | 2 |
| Tissue Adhesives | 2 |
| Trypsin Inhibitors | 2 |
| 5-alpha Reductase Inhibitors | 1 |
| Abortifacient Agents, Steroidal | 1 |
| Acaricides | 1 |
| Acid Sensing Ion Channel Blockers | 1 |
| Adenosine A2 Receptor Antagonists | 1 |
| Adenosine Deaminase Inhibitors | 1 |
| Adhesives | 1 |
| Adjuvants, Pharmaceutic | 1 |
| Adrenergic Agonists | 1 |
| Adrenergic alpha-2 Receptor Antagonists | 1 |
| Adrenergic beta-1 Receptor Agonists | 1 |
| Alcohol Antagonists | 1 |
| Ammonia Detoxicants | 1 |
| Anesthetics, Dissociative | 1 |
| Angiogenesis Inducing Agents | 1 |
| Angiography | 1 |
| Anion Exchange Resins | 1 |
| Anti-Dyskinesia Agents | 1 |
| Anti-Impotence Agents | 1 |
| Anti-Mucositis Agents | 1 |
| Anti-Osteporotic Agents | 1 |
| Anti-Testosterone Agents | 1 |
| Anti-Wrinkle Agents | 1 |
| Anti-adrenal Agents | 1 |
| Anti-seborrheic Agents | 1 |
| Anti-trypanosomal Agents | 1 |
| Anticestodal Agents | 1 |
| Anticorticosteroid | 1 |
| Antiendometriotic agent | 1 |
| Antifoaming Agents | 1 |
| Antihypercalcemic Agents | 1 |
| Antihypermagnesemic Agents | 1 |
| Antihyperphosphatemic Agents | 1 |
| Antihyperuricemic Agents | 1 |
| Antimitotic Agents | 1 |
| Antimutagenic Agents | 1 |
| Antimycotic Agents | 1 |
| Antimydriatic Agents | 1 |
| Antineovascularisation Agents | 1 |
| Antiperistaltic Agents | 1 |
| Antiplatyhelmintic Agents | 1 |
| Antisepsis | 1 |
| Antiseptic Agents | 1 |
| Antisickling Agents | 1 |
| Antispasmodic Agents | 1 |
| Antitrichomonal Agents | 1 |
| Appetite Stimulants | 1 |
| Artificial Tears | 1 |
| Ascorbic Acid | 1 |
| Autonomic Agents | 1 |
| Bile acid sequestrants | 1 |
| Buffers | 1 |
| Butyrophenones | 1 |
| Calcimimetics | 1 |
| Calcium Channel Agonists | 1 |
| Cannabinoid Receptor Agonists | 1 |
| Cariostatic Agents | 1 |
| Cathepsin B | 1 |
| Central Nervous System Agents | 1 |
| Chemical Warfare Agents | 1 |
| Cholinesterase Reactivators | 1 |
| Chromogenic Compounds | 1 |
| Coloring Agents | 1 |
| Contraceptive Agents, Male | 1 |
| Contraceptives, Oral, Combined | 1 |
| Contraceptives, Postcoital, Hormonal | 1 |
| Contraceptives, Postcoital, Synthetic | 1 |
| Convulsants | 1 |
| Cryoprotective Agents | 1 |
| Cysteine Proteinase Inhibitors | 1 |
| Delayed-Action Preparations | 1 |
| Dialysis Solutions | 1 |
| Diuretics, Mercurial | 1 |
| Dopaminergics | 1 |
| Dyes | 1 |
| Electrolyte replenisher | 1 |
| Endothelium-Dependent Relaxing Factors | 1 |
| Excipients | 1 |
| Excitatory Amino Acid Agonists | 1 |
| Filaricides | 1 |
| Fixatives | 1 |
| Fluoroquinolones | 1 |
| Food Additives | 1 |
| Food Preservatives | 1 |
| Fungicides, Industrial | 1 |
| GABA-A Receptor Agonists | 1 |
| Ganglionic Stimulants | 1 |
| Glycine Agents | 1 |
| Gonadotropin-releasing hormone agonist | 1 |
| Gonadotropin-releasing hormone antagonist | 1 |
| Gonadotropins | 1 |
| Growth Inhibitors | 1 |
| HIV Fusion Inhibitors | 1 |
| Hematologic Agents | 1 |
| Hemorrheologic Agents | 1 |
| Histamine Agents | 1 |
| Histamine Agonists | 1 |
| Immunotoxins | 1 |
| Intercalating Agents | 1 |
| Interferon Inducers | 1 |
| Iron Preparations | 1 |
| Irritants | 1 |
| Ketolides | 1 |
| Laxatives | 1 |
| Leucyl Aminopeptidase | 1 |
| Lipotropic Agents | 1 |
| Luminescent Agents | 1 |
| Luteolytic Agents | 1 |
| Matrix Metalloproteinase Inhibitors | 1 |
| Menstruation-Inducing Agents | 1 |
| Microtubule Inhibitors | 1 |
| Mouthwashes | 1 |
| Muscarinic Agonists | 1 |
| Natriuretic Agents | 1 |
| Neurotransmitter Agents | 1 |
| Oligodeoxyribonucleotides, Antisense | 1 |
| Pediculicides | 1 |
| Permeabilizing Agents | 1 |
| Pesticides | 1 |
| Pharmaceutic Aids | 1 |
| Phosphodiesterase 4 Inhibitors | 1 |
| Photoaffinity Labels | 1 |
| Phytoestrogens | 1 |
| Pigmenting Agents | 1 |
| Poisons | 1 |
| Preservatives, Pharmaceutical | 1 |
| Progesterones | 1 |
| Propionates | 1 |
| Protein Kinase C-delta | 1 |
| Pulmonary Surfactants | 1 |
| Pyrazolones | 1 |
| Reducing Agents | 1 |
| Respiratory System Agents | 1 |
| Rodenticides | 1 |
| Sensory System Agents | 1 |
| Siderophores | 1 |
| Spermatocidal Agents | 1 |
| Stimulants, Uterine | 1 |
| Sulfhydryl Reagents | 1 |
| Sunscreening Agents | 1 |
| Topoisomerase II Inhibitors | 1 |
| Tranquilizing Agents | 1 |
| Uncoupling Agents | 1 |
| Vasopressin receptor antagonists | 1 |
| Viscosupplements | 1 |
| Vitamin A | 1 |
| Vitamin K | 1 |
| sodium-glucose cotransporter 2 inhibitor | 1 |
