In which of the following ways may a drug or poison have an antagonistic effect on a neurotransmitter?

Question

Quizplus · Accepted Answer

An antagonistic effect on a neurotransmitter can be achieved by blocking its release, thereby reducing overall neurotransmitter activity. While blocking reuptake may increase levels of the neurotransmitter in the synapse, it does not reduce its activity and is considered an agonistic effect. Stimulating production of a neurotransmitter would also have an agonistic effect. Therefore, the correct choice is C - blocking release.

In Which of the Following Ways May a Drug or Poison