epinephrine is an injected medicine used to treat severe allergic reactions, breathing problems, and cardiac arrest.
epinephrine:
- narrows the blood vessels, which raises blood pressure. this may prevent the severe low blood pressure that occurs during a severe allergic reaction.
- stops leakage of fluids from blood vessels into body tissues.
- relaxes the muscles of the respiratory tract, relieving wheezing and breathing difficulty.
- increases the heart rate.
a severe or fatal stroke, heart irregularity, or heart attack can occur if the wrong dose of epinephrine is mistakenly injected into a blood vessel or if an overdose is given.