The invention relates to a formulation for delivering by oral transmucosal administration at least one lipid-lowering active principle, preferably from the statin family, said formulation including said active principle in the base or salt form, an aqueous alcohol solution titrating at least 30° alcohol, and optionally a pH correcting agent and/or an antioxidant, said active principle being in a stable and completely dissolved state in the aqueous alcohol solution. The invention also relates to a method of preparing said formulation and to the use thereof, preferably in single-dose packaging, for treating and preventing hyperlipemia and/or cardiovascular conditions.