The invention relates to a medicament comprising at least one reducing alkyl-sugar monomer having a hydroxyl function which is substituted by an alkoxy radical at C2-C40, said medicament being preferably intended to regulate inflammatory mechanisms. The reducing sugar is preferably selected from the group containing rhamnose, fucose and glucose. The invention also relates to a cosmetic treatment method involving the topical application of a composition comprising at least one reducing alkyl-sugar monomer having a hydroxyl function which is substituted by an alkoxy radical at C2-C40.