Answer:
Option E, epinephrine
Explanation:
When someone is experiencing a severe or life-threatening anaphylaxis, one of two medications are expected to be administered within a timely manner: antihistamines or epinephrine.
Antihistamines are a class of medications that block the effects of histamine upon release when anaphylaxis is triggered. An example of one of these drugs is diphenhydramine (brand name Benadryl). However, this is not a hormone.
Epinephrine is a hormone that, in medication form, inhibits the mast cell release of the mediators that cause hypersensitivity. In lay terms, it stops the agents within the body causing the allergic reaction from releasing. some well-known brand names for this medication are EpiPen and Adrenaclick.
Because of this, option E, epinephrine, is the correct answer choice.
