Medetomidine/vatinoxan, sold under the brand name Zenalpha, is a veterinary fixed-dose combination medication used as a sedative and analgesic for dogs. It contains medetomidine, an alpha2-adrenoceptor agonist, as the hydrochloride salt; and vatinoxan, an alpha2-adrenoceptor antagonist, as the hydrochloride salt.
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