Venom makes a beeline through blood brain barrier, delivering medication

The blood-brain barrier is an essential and meticulous protector of the human body. This highly selective gatekeeper of interlocking endothelial cells forms tight junctions, shielding vulnerable brains cells from toxins in the bloodstream. However, this also means that the BBB blocks many compounds from entering the brain, making the delivery of drugs via the bloodstream challenging.

source https://medicalxpress.com/news/2021-12-venom-beeline-blood-brain-barrier.html