Maropitant (trade name Cerenia in the U.S. and other countries), used as maropitant citrate is a neurokinin (NK1) receptor antagonist, which was developed by Zoetis specifically for the treatment of motion sickness and vomiting in dogs. It was approved by the FDA in 2007 for use in dogs, and was later approved for use in cats. Maropitant also has anti-nociceptive (analgesic) properties. Maropitant inhibits binding of substance P to NK-1 receptors. Substance P is an emetogen experimentally, and is found endogenously, along with NK-1 receptors, in the emetic center, chemoreceptor trigger zone, and in vagal afferent nerves in the gastrointestinal tract.

Semduramicin is an ionophore coccidiostat used in the poultry industry as a feed additive. Semduramicin is marketed under the brand name Aviax among others, indicated for the prevention of coccidiosis in poultry, caused by Eimeria tenella, E. acervulina, E. maxima, E. brunetti, E. necatrix, and E. mitis.