The highly potent botulinum neurotoxin serotype A (BoNT/A) inhibits neurotransmitter release at neuromuscular junctions resulting in flaccid muscle paralysis. respiratory arrest and death. In order to reach their neuronal cell targets. BoNT/A must cross epithelial cell barriers lining the intestines and airways. https://www.mariameetsanna.com/product-category/double-hitter/