Integrating a cholinergic drug into the existing treatment plan of a patient already taking a ganglionic blocking drug could result in a drug interaction characterized by:
A. additive vasodilating effect to produce hypotension and cardiovascular collapse.
B. additive anticholinergic effect of ganglionic blockade on the gastrointestinal and urinary tracts.
C. additive antiadrenergic effect that leads to hypotension and cardiovascular collapse.
D. antagonism of anticholinergic effect of ganglionic blockade on the gastrointestinal and urinary tracts.
Answer: D
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