Their findings, which they presented yesterday at the annual meeting of the American Chemical Society in Atlanta, were that many of the pills, powders and ointments tested had beneficial ingredients like calcium and zinc—but that others had toxins such as lead, mercury and arsenic.
Back in the day, this was a very trial-and-error kind of field,” (chemist Mark) Benvenuto said in an interview. “The stuff that we think of as dangerous now, though it was dangerous, was as cutting-edge as they had at the time.”
“What’s in Century-Old ‘Snake Oil’ Medicines? Mercury and Lead“