Aconitine is a toxin found in Aconitum that exhibits antipyretic, antihypertensive, analgesic, and antinociceptive activities. Aconitine binds neurotoxin binding site 2 of Na+ channels, forcing the channel to stay open longer, allowing continual depolarization, Na+ influx, and eventually paralysis. Aconitine acts as a positive inotrope, potentially inducing cardiac arrhythmia.