Berberin compound with a wide range of biological activity, synthesized in the culture of cells of the medicinal plant Thalictrum minus. The influence of the abiotic elisitor (Cu2 +) on the growth of the Thalictrum minus cell culture and the biosynthesis of protoberberin alkaloids in it at different stages of the growth cycle was investigated. The rapid reaction (after 2 hours) and prolonged (at the end of the growth cycle) were evaluated. The greatest effect of increasing protoberberin alkaloids was observed after exposure to (Cu2 +) 20, 25 mg/L on day 0 after 2 hours, 49 and 114% above control, respectively, while maintaining growth at the control level. By the end of the growth cycle, cell mass and protoberberin alkaloids decreased by 67-70 and 27-53%, respectively (toxic effect). At 5 mg/L (Cu2 +), the reaction was the opposite.After 2 hours, 48% growth stimulation and 48% reduction in protoberberin alkaloids were observed with respect to control. By the end of the growth cycle, an excess of 50% was maintained, and the content of protoberberin alkaloids increased by 60% relative to control. If treatment with Cu2 + was carried out in the middle of the growth cycle, at a concentration of 20, 25 mg/L, both at the rapid reaction (after 2 hours) and at the end of the growth cycle, there was a decrease in growth by 65-71% and the content of protoberberin alkaloids by 52-70%. At 5 mg/l of copper ions, an excess of growth of 50-54% was maintained, the alkaloid content remained at the control level. The reaction at 10 mg/L of Cu2 + ions was intermediate. Studies have shown the promise of using low concentrations of copper ions for Thalictrum minus cell culture. The content of protoberberin alkaloids increased against the background of stimulation of cell culture growth at the end of the growth cycle.