A person consumed a toxic substance .which body systems will help them recover from this event

I don't think that any body part would recover from drinking something toxic

The liver MAY help purify a toxic substance (Full credit to -AchademicCutesy- (Guy above me)

Explanation:

"You drink, water enters your mouth, esophagus, stomach, where it directly passes (through the sulcus ventriculi in the minor curvature of the stomach) into the small bowel, where it is taken up into the blood stream." - quora

Therefore after this being drawn into the blood stream you may probably get an infection or another harmful disease, or many organs to shut down. -Ummyesmam

Good luck :)

one time i was looking at my neighbors screen door to see if the door was open i was squinting like a fool for 10 minutes before realizing he was starring back i then died from embarrassment and am now typing this from the ghost world