This article includes the description of obtaining of Acorus Calamus rhizome extract by the percolation method and the formulation of this extract in the syrup as a pharmaceutical dosage form. The percolation rate was 0.8 ml/min. The extraction of raw materials fraction with a particles size 0.25-3 mm has been investigated. It was found that the using of 50% ethanol as the extractant maximizes raw material exhaustion at a ratio of raw material: extractant 1 : 6. The results of the syrup development with the Acorus Calamus extract have been shown that the optimal base was sugar syrup. Such physical-chemical data as description, density, identification of the syrup have been determined