Tobacco, just like other natural materials, is very sensitive to changes in the moisture content of the air surrounding it. For this reason, humectants are used in cigarette manufacture in order to improve tobacco hygroscopic properties. They are added to the tobacco to retain moisture and increase its flexibility. Humectants are most readily added as components of the casing sauce. Typical humectants are alcohols : glycols, glycerol and sorbitol. The aim of our investigation was to establish whether sorbitol effects changes in tar, nicotine and carbon monoxide yields of cigarettes. The testing was carried out in our laboratory, on experimental filter cigarettes, made up of Croatian tobaccos of different grades and different leaf groupings. The experimental blend consisted of 70% Virginia and 30% Burley. Sorbitol, a 70% water solution, was applied by spraying. Tobacco mixture was treated with 1%, 3% and 5% sorbitol, respectively. Machine smoking of experimental cigarettes, determination of crude and dry smoke condensate, determination of nicotine content in smoke condensate and determination of carbon monoxide content in the mainstream smoke of cigarettes were performed according to CORESTA Standard and Recommended Methods. The results obtained indicate that aforesaid concentrations of sorbitol in the tobacco mixture do not effect any significant changes in tar, nicotine and carbon monoxide yields of a cigarette. Consequently, it was concluded that sorbitol, regarding cigarette smoke yields, applied to the tobacco blend at the investigated, above mentioned concentrations, can normally be used in cigarette manufacture.