Indoxacarb is a new oxadiazine insecticide discovered and developed by DuPont. The indoxacarb racemate contains two enantiomers (S : R), designated DPX-KN128 and DPX-KN127, but only the S enantiomer has insecticidal activity. It inhibits insect neuronal voltage-dependent sodium channels. Indoxacarb is an active component of Merck Activyl® used in the treatment of flea and tick in dogs and cats. DuPont™ Steward® WG is a water dispersible granule stomach and contact insecticide powered by Indoxacarb for control of various insect pests on a variety of crops.

Vedaprofen is a PGE2 synthase inhibitor approved in Europe for the treatment of pain in horses and dogs.

Ibafloxacin is a fluoroquinolone antibiotic drug used in veterinary medicine. Ibafloxacin, a fluorinated 4-quinolone, is a broad spectrum antibiotic with bactericidal action against Gram-positive and Gram-negative bacteria. Ibafloxacin is presented in the form of a tablet/oral gel containing a racemic mixture of S- and R-ibafloxacin. The antimicrobial activity of the racemate originates mainly from the S-enantiomer. Ibafloxacin was marketed under the brand name Ibaflin. Ibaflin tablets were intended for use in dogs for treatment of respiratory tract infections, urinary tract infections and dermal infections caused by ibafloxacin susceptible pathogens. Ibafloxacin, is an antibiotic belonging to the class ‘fluoroquinolones’. It works by blocking an enzyme called ‘DNA gyrase’, which is important in allowing bacteria to make copies of their DNA. This enzyme is only found in bacterial cells, and does not have a similar function in animal cells. By blocking DNA gyrase, ibafloxacin prevents the bacteria from making DNA and stops them making proteins and growing, resulting in their death.

Dirlotapide is indicated for the management of obesity in dogs. Dirlotapide is a microsomal triglyceride transfer protein (MTP) inhibitor. It mainly acts locally in the gut to reduce appetite, increase fecal fat and produce weight loss in dogs. The adverse reactions associated with treatment with Dirlotapide include vomiting, loose stools/diarrhea, lethargy, and anorexia.

Mavacoxib (trade name Trocoxil) is a veterinary drug used to treat pain and inflammation in dogs with the degenerative joint disease. Mavacoxib is a non-steroidal anti-inflammatory drug (NSAID) of the coxib class. Mavacoxib acts by preferential inhibition of COX-2-mediated prostaglandin synthesis. It, therefore, possesses analgesic and anti-inflammatory properties. The products of COX-2 metabolism are also involved in ovulation, implantation, and closure of the ductus arteriosus. Mavacoxib is well absorbed after oral administration; bioavailability was 87% in fed dogs and 46 % in fasted conditions and the recommended dose is based on administration with food. Therapeutic concentrations in fed dogs are reached rapidly and peak concentrations are obtained in less than 24 hours after administering a dose. Mavacoxib is approximately 98% bound to plasma proteins. It is extensively distributed throughout the body and almost all the mavacoxib-related residues in plasma comprise parent drug. The rate of body clearance of mavacoxib is slow and the major route of elimination is by biliary excretion of the parent drug. Adverse reactions of the digestive tract such as vomiting and diarrhea were commonly reported, loss of appetite, hemorrhagic diarrhea, and melaena have been reported in uncommon cases. Gastrointestinal ulceration was reported in rare cases. Apathy, degradation of renal biochemistry parameters and impaired renal function have been reported in uncommon cases. In rare cases, these adverse reactions may be fatal.

Fipronil is a member of the phenyl pyrazole class of pesticides, which are principally chemicals with a herbicidal effect. Fipronil, however, acts as an insecticide with contact and stomach action. Fipronil is an extremely active molecule and is a potent disruptor of the insect central nervous system via the (-aminobutyric acid (GABA) regulated chloride channel. Fipronil is classed as a WHO Class II moderately hazardous pesticide. Cutaneous skin reactions appear to be the most common adverse drug experiences reported for fipronil in dogs and cats.Animals exposed to large doses of fipronil via accidental oral absorption are expected to display seizures, and neurological and hepatic function should be monitored. There appear to be no reported interactions between fipronil and approved companion animal drugs and ectoparasiticides.

Spinosad is a natural mixture of pediculicidal tetracyclic macrolides—spinosyn A and spinosyn D in the ratio of 5:1. It is derived from species of actinomycetes bacteria - Saccharopolyspora spinosa and is a bacterial waste product produced by fermentation on a nutrient food source. It has since long been used as a pesticide and classified by the US Environment Protection Agency as a reduced risk pesticide product. Spinosad has a high level of efficacy for lepidopteran larvae, as well as some Diptera, Coleoptera, Thysanoptera, and Hymenoptera, but has limited to no activity to other insects and exhibits low toxicity to mammals and other wildlife. Spinosad overstimulates nerve cells by prolonging electrical impulse across synapses by acting like acetylcholine. After periods of hyperexcitation, lice become paralyzed and die. Recently, FDA has approved the topical suspension of spinosad 0.9% for treatment of head lice infestation in patients four years of age and older. It is both pediculicidal and ovicidal.

Permethrin is a synthetic pyrethrin derivative acts as a neurotoxin by depolarizing the nerve cell membrane. Permethrin disrupts the sodium channel current by which membrane repolarization is regulated resulting in fatal paralysis of the nerves in the exoskeletal respiratory muscles of susceptible arthropods, including lice and mite. Permethrin is sold under brand names NIx and Elimite to treat pediculosis, scabies and demodicidosis.

Gentamicin is an antibiotic of the aminoglycoside group, is derived by the growth of Micromonospora purpurea, an actinomycete. Gentamicin is a complex of three different closely related aminoglycoside sulfates, Gentamicins C1, C2, and C1a. Gentamicin is a broad-spectrum antibiotic, but may cause ear and kidney damage. Gentamicin binds to the prokaryotic ribosome, inhibiting protein synthesis in susceptible bacteria. It is bactericidal in vitro against Gram-positive and Gram-negative bacteria. Adverse reactions include adverse renal effects, neurotoxicity (dizziness, vertigo, tinnitus, roaring in the ears, hearing loss, peripheral neuropathy or encephalopathy), respiratory depression, lethargy, confusion, depression, visual disturbances, etc.