Uncover the Secrets of Histamines
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Questions and Answers

Which of the following statements about histamine is true?

  • Histamine is not a neurotransmitter
  • Histamine is recognized as a neurotransmitter (correct)
  • Histamine receptors are only found in the brain
  • Histamine receptors are not blocked by antihistamines

    • What is the main reason drowsiness-inducing antihistamines cause drowsiness?

  • They block histamine receptors (correct)
  • They increase histamine production
  • They decrease histamine receptor availability
  • They have a sedative effect on the brain

    • Why do non-drowsy formulations of antihistamines not cause drowsiness?

  • They do not block histamine receptors (correct)
  • They increase histamine production
  • They have a stimulant effect on the brain
  • They decrease histamine receptor availability

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