Abstract
Studies were conducted on the toxicity and possible sensitizing effect of the lyophilizate of a therapeutic probiotic agent from the most active strains of lactic acid and propionic acid bacteria isolated from healthy people: L. plantarum 2v/A-6+L. brevis B-3/A-26+L. acidophilus 27w/60+P. shermanii 8. Based on the studies conducted to evaluate acute toxicity with an oral single administration of probiotic agent solutions (lyophilizate of lactic acid and propionic acid bacteria) at doses of 300, 2,000, 4,000, and 5,001mg/kg of weight, the toxicity class of the preparation under study has been defined as a non-toxic substance. In the study on laboratory mice of subchronic (subacute) toxicity of probiotic agent (lyophilizate of lactic acid and propionic acid bacteria)) in doses of 5.0×106, 10.0×106, and 15.0×106 CFU, it has been found that the preparation does not have a toxic effect on the body in case of 28-day use. Studies of the chronic toxicity of the probiotic agent (lyophilizate of lactic acid and propionic acid bacteria) in doses of 5.0×106, 10.0×106, and 15.0×106 CFU, in laboratory mice have shown that this preparation does not have a toxic effect on the body in case of prolonged 60-day use and does not cause structural changes in internal organs. It has been established that the therapeutic probiotic agent (lyophilizate of lactic acid and propionic acid bacteria) does not have a potential sensitizing (allergenic) effect on rat peritoneal mast cells.