Ceramide glucosyltransferase (or glucosylceramide synthase) is a glucosyltransferase enzyme involved in the production of glucocerebroside. Ceramide glucosyltransferase (or glucosylceramide synthase) is a glucosyltransferase enzyme involved in the production of glucocerebroside. It is classified under EC 2.4.1.80. It is inhibited by miglustat and eliglustat, both drugs developed for the treatment of Gaucher disease.