Botulinum toxin, wanda kuma aka sani da Botox, wani nau'in neurotoxin ne mai karfi wanda kwayoyin Clostridium botulinum ke samarwa. Sunadari ne wanda zai iya haifar da wani nau'in guba na abinci mai yuwuwa wanda ake kira botulism. A cikin ƙananan allurai, duk da haka, ana amfani da shi ta hanyar likitanci don magance cututtuka daban-daban, irin su ciwon tsoka, ciwon kai, da yawan gumi, da kuma dalilai na kwaskwarima don rage bayyanar wrinkles. Botulinum toxin yana aiki ta hanyar toshe sakin acetylcholine, neurotransmitter wanda ke nuna alamar ƙwayar tsoka, wanda ke haifar da shakatawar tsoka da raguwar ayyukan tsoka.