Any Chance the Medicine could have Shocked Their Systems?

  Is there chance modern prescription medicine can shock those who have not been exposed to it?
Of all the short posts I have written tonight on the deaths of the child immigrants, this might be the least credible.
  Still, I wonder.
  Both Jakelin Caal Maquin, 7, and Felipe Gomez Alonzo, 8, were taken to the hospital. I would imagine, both received prescriptions. I read how Felipe was prescribed Tylenol.
  But, the question is, how familiar to their bodies were medications of any sorts? Where they were from, are pills and medicines commonly taken by many of the people? Can simple medicine, such as Tylenol, shock the system, if the body is not used to such medicine?