Juan Martinez, a 40-year-old pest control technician, comes to the emergency department with severe progressive gastrointestinal distress. The staff question him about his work and possible exposures. He states he often uses malathion, a cholinergic agent, in his work. Insecticide poisoning from malathion is suspected. Juan should be instructed to monitor for which side effects of the prescribed anticholinergic antidote?
a) Confusion or dizziness.
b) Excessive urination.
c) Excessive sweating.
d) Diarrhea.