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EpiPen is an injection that contains epinephrine, a chemical that narrows blood vessels and opens airways in the lungs. EpiPens have become a necessity for families with children suffering from severe allergies to counter effects like wheezing, uneven breathing, increased or decreased heart rate, swelling and other potentially fatal reactions.
What does epinephrine do in a lidocaine injection? constricts blood flow in capillaries via alpha 1 receptor (same as phenylephrine or over the counter cold remedies which are alpha 1 agonists) What does epinephrine do in an inhaler or endogenous epinephrine? dilate airway smooth muscle or large blood vessels via beta 2 receptors What are the 5 types of muscarinic receptors that mediate PNS control in different tissues?