: a neurotoxic polypeptide C79H131N31O24S4 in the venom of the honeybee (Apis mellifera) that is used especially in biomedical research
Apamin is a potent bee venom toxin that blocks small calcium-activated potassium channels. This toxin is also the bee venom constituent responsible for the painful sensation that accompanies bee stings.—
David Gurwitz, The Lancet
David Gurwitz, The LancetCite this Entry
“Apamin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/apamin. Accessed 4 Nov. 2025.
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