This article presents a study of the effect of the use of a biologically active water complex "HALPI" on protein metabolism in geriatric dogs. When assessing the effect of the biologically active water complex "HALPI" on the indicators of protein metabolism in dogs, it was found that the use of this biologically active water complex promotes an increase in the amount of total protein. in organism. Thus, the use of a biologically active water complex "HALPI" affects metabolic processes by compensating for possible deficiencies of vitamins and microelements, which contributes to the improvement of the quality of life of elderly dogs