It is a Na⁺ channel blocker a potent antiarrhythmic and a local anesthetic.

It strongly antagonizes the effects of Aconitine. Its basic mechanism of action is the inhibition of Na⁺ conductivity of excitable cells. The Na⁺ channel blockage level does not depend on the potential and stimulus intensity. Its antiarrhythmic activity level is higher than that of Quinidine, and its mechanism of action significantly differs from that of other class I antiarrhythmics.

For experiments on antiarrhythmic effects: 0.05 mg/kg to 0.5 mg/kg
For anesthetic activity on nerve terminals: 0.1% to 0.5% solution
For in vitro experiments: 10-9-10-8 M solution.
Store at +4°C, in dark place.

For research use only — not intended for food, diagnostic or therapeutic use