When experiencing a heart attack, the first thing you must do is call immediately for an ambulance. This is an important step and should be followed even if you are not completely sure whether your symptoms imply a heart attack. Regardless, immediate medical attention is crucial.
“It’s important that you rest while you wait for an ambulance, to avoid unnecessary strain on your heart,” explains the NHS UK.
If aspirin is available (and you are not allergic to it), slowly chew and then swallow an adult-size tablet (300mg) while you wait for the ambulance, advises the health body. Aspirin helps to thin the blood and improve the blood flow to your heart.