Jefo 5020 JEFO Avenue – C.P. 325 , St-Hyacinthe , J2S 7B6 Canada About Solutions products Companies Jefo Products Vicomb Vicomb From Ruminant 0 Share Vitamin supplement for dairy cattle. VICOMB™ is a vitamin supplement formulated and designed exclusively for transition dairy cows. Most popular related searches ruminant rumination dairy cow dairy cattle cattle Customer reviews No reviews were found for Vicomb. Be the first to review! Add your review Publish your review Great! review successfully added!