The phrase "poisonous substance" is correct and usable in written English.
It is typically used when talking about harmful or toxic substances that can cause harm or illness when ingested or exposed to. Example: The lab technician was wearing protective gear while handling the poisonous substances to prevent any accidental exposure.
Although ethanol is less toxic than methanol, it is nonetheless a poisonous substance, and many people die each year from ethanol poisoning.
For the purposes of this study, non-fatal self-poisoning was defined as an act where a person deliberately ingested a poisonous substance, or ingested a medicinal drug in excess of prescribed dosage, with a non-fatal outcome.
Nicotine, the poisonous substance in tobacco, also has soothing effects.
We don't countenance any state allowing any grower to put any poisonous substance on any food.
Both contain hydrocyanic acid, a poisonous substance that is eliminated by cooking.
Antiserum, blood serum that contains specific antibodies against an infective organism or poisonous substance.
But the real story behind the mice, now primed for increased intestinal permeability and a disposition to chronic inflammatory disease, had begun nearly 17 years earlier, in a disappointing search for a cholera vaccine... Enterotoxins are poisonous substances that affect the intestines, such as those causing food poisoning or cholera.
These bacteria synthesize and release poisonous substances called exotoxins.
The common denominator is that, allegedly, the body is stimulated to eliminate poisonous substances.
Much of the sales patter revolves around "toxins": poisonous substances that you ingest or inhale.
Kirkuk province governor Najmuddin Kareem was quoted as saying: "There were poisonous substances in these shells.
