Thank the marvelous snake

Mother Nature has provided a rich source of raw materials for a host of important drugs: aspirin comes from willow tree bark; the blood pressure drug captopril from the venom of a pit viper; warfarin, the widely used blood thinner, was derived from moldy sweet clover.

Now researchers think that desperately ill heart failure patients may find relief with the help of the eastern green mamba snake.

That's the hope, at least, of John Burnett, a heart failure expert at Mayo Clinic, Rochester, Minn. He and his colleagues have fashioned an experimental drug based in part on the venom of the snake, a tree-dwelling relative of the cobra that is found in eastern Africa.

The Deadly Mamba as a Lifesaver

Marvelous.