A non-effervescent granulate containing N-acetylcysteine and maltodextrin is disclosed. The composition also comprises a gliding agent selected from fumed colloidal silicon dioxide, precipitated silica, and talc; a flavouring agent selected from orange, lemon, peppermint, anise, apricot or strawberry; and a sweetener chosen from aspartame, saccharin, acesulfame potassium, sucralose, stevia, advantame or neotame. A polyalcohol may also be included and is selected from sorbitol, xylitol, mannitol, maltitol and lactitol. In a preferred embodiment, the composition comprises at least 30 wt% N-acetylcysteine, at least 30 wt% maltodextrin, orange flavouring, sucralose (as sweetener), colloidal silicon dioxide (as gliding agent) and mannitol (as polyol).