Over forty years ago, OSU researchers tested the toxicity of poinsettias on rats. They blended portions of the plants in a solution and fed it to the lab rats.
The researchers concluded that rats, “when given extraordinarily high doses of various portions of the poinsettias, show no mortality, no symptoms of toxicity, nor any changes in dietary intake or general behavior pattern.”
In short, the plants neither sickened the rats nor dented their appetites.
- Source: OSU News from the College of Food, Agricultural and Environmental Sciences, December 7, 2012 Study Published in Toxicon, in 1971.