<unk>  is a neurotoxin from the venom of the South African spitting (or fattail) scorpion Parabuthus transvaalicus. Most likely, it targets sodium channel function, thus promoting spontaneous and repetitive neuronal firing. Following injection into mice, it causes non-lethal writhing behaviour.
Bestoxin
Ikitoxin
Mucrocetin
Saxitoxin
Tacrine
Guanitoxin
Visine
Equilenin