Alvegest is a therapeutic complex based on more recently acquired knowledge concerning the digestive physiology of ruminants. The main peculiarity of the digestive disorders observed in the species of mammals consists of changes in the gastric pH on the one hand and changes of the fauna flora on the other hand. Lack of rumination (partial or total) chronic bloat, subacute or chronic overloading, a succession of obstination and diarrhea, Anorexia or capricious appetite are the most often encountered clinical forms of these internal disorders. Most of the drugs used until now intended for the regulation of the mobility of the digestive tract (central System), innervation, (automatic muscular system) and were based upon the necessity of action on the contents of the digestive tract itself was found imperative, this seems actually to be the only one true etiological intervention. Due to the combination to its contents. Alvegest has become a therapy of choice for every digestive disorder in ruminants.