Clobutinol is a cough suppressant formerly distributed by Boehringer Ingelheim and its licensees under the names Lomisat and Silomat, by Bioter as Biotussin, and by Violani-Farmavigor as Pertoxil.

Side effects include drowsiness, dizziness, insomnia, nausea, vomiting, and abdominal discomfort.

[3] Boehringer Ingelheim products containing clobutinol were voluntarily withdrawn from sale in Germany, and the rest of the world, on August 31, 2007.

[5] Prior to withdrawal, it was available throughout Europe and Central America, as well as in South Africa.

Trade names include Biotussin, Lomisat (Spain), Pertoxil (Italy), and in most of the world, Silomat.