For centuries, remedies from the Amazon rainforest have saved lives worldwide. Cutting-edge science continues to reveal plants and animals with profound medicinal potential.
The COVID-19 pandemic, ongoing for over a year, heightened global awareness of health crises, vaccines, and treatments. Yet, a key shortage in French hospital intensive care units in April 2020 flew under the radar: curare.
Derived from Amazonian vines, curare has served as a poison for centuries among Indigenous peoples. They apply it to blowgun arrows for hunting, paralyzing prey through muscle relaxation. In the 16th century, Swiss physician Paracelsus, the father of toxicology, recognized its therapeutic value at precise doses.
Today, curare is a staple in surgery and ICUs, blocking nerve signals to skeletal muscles for controlled relaxation. In severe COVID-19 cases with acute respiratory distress syndrome, it eases mechanical ventilation by relaxing the chest wall.
In his authoritative book The Amazon: What Everyone Needs to Know (2020), American ethnobotanist Mark J. Plotkin highlights curare as just one example. The region yields both established drugs and future breakthroughs. In 2019, Brazilian researchers identified a molecule from the banana spider (Phoneutria nigriventer) venom as a potential natural Viagra.
The Croton lechleri tree produces "dragon's blood" sap, used by Indigenous communities for centuries to treat infections, inflammation, and wounds. Modern research explores its potential against diarrhea and even HIV. Poison dart frogs of the Dendrobatidae family secrete skin alkaloids for defense; scientists study these for advanced topical anesthetics and anticonvulsants.
Bats produce draculin, a blood-thinning agent. The backs of monkey frogs (Phyllomedusa bicolor) yield kambo, a natural opioid forty times more potent than morphine. Meanwhile, psilocybin from hallucinogenic mushrooms shows strong promise in treating anxiety, depression, and PTSD.
