What if a person who is perfectly healthy and does not have any problem takes an epinephrine inj. how will it affect him. can u please tell me. thank u?

Depends: The effect of Epinephrine depends on the dose and how it is given (subcutaneous, intramuscularly, or intravenously). Epinephrine is adrenalin. It typically causes an increase in heart rate, increased blood pressure, shakiness, headache. The effect usually wears off rapidly. It is typically given in an emergency, such as major allergic reactions with breathing problems, or heart stoppage.