Coniine at 10 mg/kg dose increased reaction time in Hotplate test, however, this prolongation was not significant (control:
9±0.45 s, coniine: 12.83±1.38 s, P > 0.05).
The prolongation became evident at dose of 20 mg/kg (coniine 16.33±2.4 s, P < 0.05; Fig. 1). Starting from 25 mg/kg toxicity symptoms such as fasciculations, dyskinesia, convulsions and death were observed in a dose dependent manner.
Accordig to this observation we chosed 20 mg/kg dose for coniine that is not toxic and yet maximum in potency for the rest of experiments.