Natural toxins such as venom from spiders, snakes and scorpions hold the ability for the development of new drugs. Venomics is the study of the different proteins in venom which have led to separating different 
compounds and different drug discoveries. Previously it was believed that venom contained as little as 3 or 4 components, but now researchers have realized that they contain thousands. A drug from the deadly “Frazer Island Funnel Web Spider of Australia” can hinder cell death after a heart attack. Venom is a complex mix of proteins and can vary greatly in potency from jellyfish, insects, reptiles and even snails. Venom proteins have evolved to target a certain molecule in the body which is why they are so effective as a drug. Neurotoxins attack the nervous system, Hemotoxins attack the blood, and tissue toxins attack the area around the poisoned section. Venom from the Pit Viper is now used to treat High Blood Pressure. A drug derived from the venom of the Gila monster is used to treat diabetes. Ante coagulant drugs originated from vampire bats. Work is now being done in Israel with the Deathstalker scorpion to detect tumors. At the same time, because there are so many components to the makeup of venom, it is also difficult to find an antidote to a venomous bite. Opossums are responsible for the antidotes for bites from rattlesnakes since somehow, they can withstand being bitten several times and still survive. Just be careful who you decide to bring home as a pet.
https://www.bbcearth.com/news/how-venoms-are-shaping-medical-advances