john ching, chemist & apothecary, london
worm lozenges, prepared by the inventor & patentee
ingredients: panacea of mercury, white sugar, saffron, spring water (evening dose contains jalap)
advertisement circa early 1800s
advertising coin
"the best medicine in the world. i ching patentee for worm lozenges, sold in boxes at 3/6 packets 1' and in small packets at 6" each"
"by every principal medicine vender in the kingdom"
peeling skin, a symptom of mercury poisoning, especially in children