Just a coinkydink?
Toxicity
It is toxic to both humans and livestock.[14]
Ingestion of silverleaf nightshade has been implicated as a cause of ivermectin toxicosis in horses given the recommended dosage of the drug. Metabolites from the plant are speculated to disrupt the blood–brain barrier, allowing ivermectin to enter and disrupt neurotransmitter function in the brain and spinal cord
https://en.wikipedia.org/wiki/Solanum_elaeagnifolium