Do you have any of the following symptoms that require emergency treatment? Call 911 or other emergency services immediately.

• Severe upper abdominal pain
• Chest pain that is crushing or squeezing, feels like a heavy weight on your chest, or occurs with any other symptoms of a heart attack. Note: Symptoms of a heart attack and symptoms of heartburn may feel the same. It is important to consider all your other symptoms to determine whether you have a more serious problem.
• Signs of shock

• If the person becomes unconscious, see Rescue Breathing and Cardiopulmonary Resuscitation (CPR) in the topic Dealing With Emergencies.
• If emergency medical personnel are not going to arrive soon and the person is awake, alert, not vomiting, and not allergic to aspirin, have the person chew and swallow 1 adult-strength aspirin (325 mg) or 4 "baby" aspirin (80 mg each) before emergency medical personnel such as paramedics arrive. Be sure to tell emergency personnel that aspirin has been taken.