Frunevetmab
Frunevetmab, sold under the brand name Solensia, is a medication used to treat pain associated with osteoarthritis in cats. It is the first monoclonal antibody new animal drug approved by the U.S. Food and Drug Administration (FDA) for use in any animal species. Frunevetmab is the international nonproprietary name (INN). Clinical usage 
Frunevetmab is a cat-specific monoclonal antibody (a type of protein) designed to recognize and attach to a protein called nerve growth factor (NGF) that is involved in the regulation of pain. When frunevetmab binds to NGF, it prevents the pain signal from reaching the brain. Frunevetmab is indicated for the alleviation of pain associated with osteoarthritis in cats. The most common side effects seen in cats include vomiting, diarrhea, injection site pain, scabbing on the head and neck, dermatitis, and pruritus (itchy skin). History
In February 2021, Frunevetmab was approved for medical use in the European Union. In January 2022, the following year, Frunevetmab was approved for medical use in the United States. Development as a potential drug for humans was stopped due to risk concerns over worsening osteoarthritis. See also
Monoclonal antibody

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Monoclonal antibodies
Cat medications