Drug index100 entries, A to Z.

Every entry below is condensed from a named veterinary textbook and carries its book and page. The full set, with a body-weight dose calculator, is in the drug guide.

Albendazole — Broad-spectrum benzimidazole anthelmintic.
Amoxicillin — Aminopenicillin class beta-lactam antibiotic.
Amoxicillin/Clavulanate — Potentiated penicillin class antibiotic.
Ampicillin — Aminopenicillin class beta-lactam antibiotic.
Amprolium — Antiprotozoal agent / coccidiostat.
Atipamezole — Alpha-2 adrenergic receptor antagonist.
Atracurium — Nondepolarizing neuromuscular blocking agent.
Atropine — Anticholinergic / parasympatholytic agent.
Bromides — Oral inorganic anticonvulsant.
Bupivacaine — Long-acting local amide anesthetic.
Buprenorphine — Partial mu-opioid receptor agonist analgesic, with a ceiling effect on respiratory depression compared to…
Butorphanol — Opioid agonist-antagonist analgesic and antitussive
Carprofen — Nonsteroidal anti-inflammatory drug (NSAID).
Cefpodoxime — Third-generation cephalosporin antibiotic; a beta-lactam that inhibits bacterial cell wall synthesis.
Ceftiofur HCl — Third-generation cephalosporin antibiotic developed specifically for veterinary use in food animals
Cholestyramine — Bile-acid-binding resin; used to trap toxins/drugs undergoing enterohepatic recirculation and lower…
Chorionic Gonadotropin — Human chorionic gonadotropin (hCG); mimics LH to induce ovulation or stimulate gonadal hormone production in…
Ciprofloxacin — Fluoroquinolone antibiotic; bactericidal via inhibition of bacterial DNA gyrase and topoisomerase IV.
Citrate, Potassium — Potassium citrate; an alkalinizing agent used to help prevent calcium oxalate urinary stone formation.
Clindamycin — Lincosamide antibiotic; blocks bacterial protein synthesis, active against gram-positive and anaerobic…
Clonidine — Central alpha-2 adrenergic agonist; used for sedation, pain modulation, and anxiety-related behavior in dogs.
Cyproheptadine — First-generation H1 antihistamine with serotonin-antagonist activity
Deferoxamine — Iron-chelating antidote for acute iron overdose
Desmopressin — Synthetic analog of antidiuretic hormone (vasopressin)
Detomidine — Alpha-2 adrenergic agonist sedative and analgesic used mainly in horses.
Dexamethasone — Potent, long-acting synthetic glucocorticoid corticosteroid
Diazoxide — Potassium-channel-opening drug that suppresses insulin secretion
Diltiazem — Benzothiazepine calcium-channel blocker.
Diminazene Aceturate — Aromatic diamidine derivative antiprotozoal.
Diphenhydramine — First-generation H1 antihistamine; also has sedative and mild anticholinergic effects.
Doxapram — CNS/respiratory stimulant; used to initiate breathing in neonates or reverse anesthetic-induced respiratory…
Doxycycline — Tetracycline-class bacteriostatic antibiotic.
Doxycycline Hyclate and Doxycycline Monohydrate — Tetracycline-class bacteriostatic antibiotic, active against a broad range of bacteria as well as some…
Enrofloxacin — Fluoroquinolone antibiotic; bactericidal via inhibition of bacterial DNA gyrase and topoisomerase IV.
Estradiol — Natural estrogen hormone; used in reproductive management protocols and historically for postbreeding…
Ethanol — Alcohol. Instructions for making dilutions from stock solutions (vodka) provided.
Fenbendazole — Antiparasitic, dewormer.
Flunixin — Anthranilic-acid-derivative NSAID; nonselective COX inhibitor used for musculoskeletal inflammation and…
Flunixin Meglumine — Nonsteroidal anti-inflammatory drug (NSAID) labeled for horses, cattle, and swine.
Fluticasone — Potent inhaled corticosteroid used for feline asthma/chronic bronchitis and canine allergic airway disease…
Furosemide — High-ceiling loop diuretic.
Gabapentin — Gabapentinoid anticonvulsant/analgesic; modulates calcium channels to reduce neuropathic pain and anxiety.
Gentamicin, Systemic — Aminoglycoside antibiotic; bactericidal against aerobic gram-negative bacteria by disrupting bacterial…
Glucagon — Pancreatic hormone that raises blood glucose by stimulating hepatic glycogen breakdown
Hemoglobin Glutamer-200 — A polymerized bovine hemoglobin-based oxygen carrier, used as a blood substitute when compatible blood is…
Hydralazine — Direct-acting arteriolar vasodilator; reduces afterload in congestive heart failure.
Hydroxyethyl Starch Colloids — Synthetic starch-based colloid; a plasma volume expander used in circulatory shock.
Hypertonic Saline — Concentrated sodium chloride solution; used in small volumes for rapid, temporary vascular volume expansion…
Imidocarb — Carbanilide antiprotozoal (babesiacide); blocks inositol uptake into infected red blood cells, killing…
Immune Globulin, — Human intravenous immune globulin (IVIG), used off label in dogs and cats for severe immune-mediated disease…
Interferon Alfa, Human — Human recombinant interferon used off label as an immunomodulator/antiviral in cats and dogs, notably for…
Iohexol — Low-osmolar, nonionic iodinated radiographic contrast medium, used for myelography, CT and GI contrast…
Ivermectin — Macrocyclic lactone antiparasitic.
Ketamine — Dissociative anesthetic agent.
Lanthanum — Lanthanum carbonate, a non-calcium intestinal phosphate binder
Leucovorin — Folinic acid (leucovorin), a reduced folate used to rescue normal cells from the toxicity of…
Levamisole — Imidazothiazole anthelmintic; paralyzes susceptible nematodes by acting as a nicotinic acetylcholine receptor…
Lidocaine — Amide-type local anesthetic; used systemically by constant-rate infusion as an analgesic and antiarrhythmic…
Lincomycin — Lincosamide antibiotic; blocks bacterial protein synthesis, active against gram-positive and anaerobic…
Lokivetmab — Caninized monoclonal antibody that neutralizes interleukin-31, the key itch-signaling cytokine in canine…
Loperamide — Peripherally restricted opioid receptor agonist
Lufenuron/Lufenuron Combination — Insect growth regulator; blocks chitin synthesis so flea eggs/larvae/pupae cannot develop a normal…
Magnesium, IV — Injectable magnesium salt used parenterally to correct hypomagnesemia or as an antiarrhythmic/anticonvulsant…
Medetomidine — Alpha-2 adrenergic agonist sedative/analgesic, reversible with the specific antagonist atipamezole.
Megestrol — Synthetic progestin hormone; used historically for estrus suppression and some dermatologic/behavioral…
Melarsomine — Organoarsenical adulticide; the only approved drug for killing adult heartworms (Dirofilaria immitis) in dogs.
Meloxicam — Oxicam-class NSAID with COX-2 preferential activity; used for pain, inflammation and fever.
Meperidine — Synthetic phenylpiperidine opioid analgesic; a weak mu-receptor agonist with a short duration of action.
Methylene Blue — Reduces methemoglobin back to functional hemoglobin; the antidote for methemoglobinemia (e.g.
Midazolam — Water-soluble benzodiazepine sedative/anticonvulsant, enhancing GABA-A receptor activity in the CNS.
Minocycline — Tetracycline-class bacteriostatic antibiotic with good tissue penetration, including into the CNS.
Morphine — Full mu-opioid receptor agonist; the prototype analgesic against which other opioids are compared.
Moxidectin/Moxidectin — Macrocyclic lactone (milbemycin) anthelmintic/ectoparasiticide
Mycobacterial Cell Wall Fraction — Immunostimulant (modified Mycobacterium cell wall components) injected into equine sarcoid tumors
Mycophenolate — Immunosuppressive drug that inhibits lymphocyte proliferation by blocking purine synthesis
Naloxone — Pure opioid receptor antagonist; used to reverse opioid sedation, respiratory depression or overdose.
Norepinephrine — Naturally occurring catecholamine vasopressor
Oclacitinib — Immunosuppressive agent; labeled as Apoquel.
Oxymorphone — Full mu-opioid receptor agonist analgesic, more potent than morphine.
Oxytetracycline — Tetracycline-class bacteriostatic antibiotic.
Paromomycin — Aminoglycoside antibiotic, unusual among the class for activity against intestinal protozoal parasites as…
Penicillin G — Beta-lactam antibiotic available in various salt formulations.
Polyethylene Glycol 3350 — Osmotic laxative powder (Miralax).
Potassium — Electrolyte available as potassium acetate, potassium chloride, and potassium gluconate.
Praziquantel/Praziquantel — Isoquinoline anthelmintic effective against tapeworms
Prednisolone — Intermediate-acting corticosteroid; hepatically conjugated and excreted in urine.
Rabacfosadine — Nucleotide analog antineoplastic prodrug; inhibits DNA polymerase to halt cell division, FDA-approved…
Romifidine — Alpha-2 adrenergic agonist sedative, used mainly in horses.
Ropivacaine — Long-acting amide local anesthetic; blocks voltage-gated sodium channels, more sensory-selective and less…
Staphylococcus Aureus Phage — Bacteriophage (virus) therapy that targets and lyses Staphylococcus aureus specifically, explored as a…
Streptomycin — An aminoglycoside antibiotic, narrow-spectrum against aerobic gram-negative bacteria.
Sulfadimethoxine — Sulfonamide antibiotic and anticoccidial; labeled as Albon or Bactrovet.
Thyrotropin-Releasing Hormone — Hypothalamic hormone given IV as a diagnostic stimulation test
Tigilanol Tiglate — Protein kinase C activator; injected directly into canine mast cell tumors, causing localized tumor cell…
Tolfenamic Acid — Fenamic-acid-class NSAID; nonselective COX inhibitor used for pain, inflammation and fever.
Toltrazuril — Triazine antiprotozoal agent.
Triamcinolone Acetonide — Intermediate-acting synthetic glucocorticoid corticosteroid.
Triamcinolone Diacetate — Synthetic glucocorticoid corticosteroid, used for its anti-inflammatory and immunosuppressive effects.
Tylosin — Macrolide antibiotic.
Vitamin E ± Selenium — Antioxidant nutrient combination used to treat and prevent white muscle disease (nutritional myodegeneration)…