Chest tightness is a symptom, not a diagnosis, so the right medication depends on the cause. When chest tightness is due to angina, doctors commonly use nitroglycerin, which relaxes blood vessels and can relieve chest pain quickly.
Common medicines used
For angina-related chest tightness, nitroglycerin is the best-known fast-acting option. It is usually taken at the first sign of chest pain or tightness and works by widening blood vessels so the heart gets more blood flow.
Other medicines may be prescribed to prevent repeated angina attacks, such as longer-term heart medicines that reduce the heart’s workload or improve blood flow. The exact choice depends on your diagnosis and overall heart risk.
If chest tightness is caused by bronchospasm or asthma-like airway tightening, treatment may involve bronchodilator medicines and sometimes steroids. In that case, heart medicines like nitroglycerin would not be the right treatment(medicalnewstoday)
How nitroglycerin is used
Nitroglycerin tablets for angina are commonly placed under the tongue and allowed to dissolve. The usual advice is to sit down first to reduce dizziness, and if the pain does not improve after 5 minutes, a second dose may be taken; if it still persists after another 5 minutes, emergency help is needed
Common side effects include headache, dizziness, and facial flushing. These are often short-lived, but worsening symptoms or signs of allergy need medical attention.
When it is an emergency
Chest tightness can be serious, because chest pain has many possible causes and some are urgent. Severe chest pressure, pain spreading to the arm, jaw, back, or neck, shortness of breath, sweating, nausea, or pain that does not go away should be treated as an emergency.
If the pain is new, severe, happening at rest, or not improving with prescribed treatment, emergency care is important because unstable angina or a heart attack may be the cause.
Important caution
Do not self-medicate chest tightness with random painkillers or leftover prescription drugs. The safest medication depends on whether the cause is heart-related, lung-related, anxiety-related, or something else entirely.
Simple example
If a person with known angina feels the same familiar chest tightness they have had before, their doctor may have prescribed nitroglycerin for quick relief. If a person has chest tightness with wheezing and trouble breathing, the treatment may instead be an inhaler medicine, not nitroglycerin.
What to do now
If the chest tightness is happening right now and is severe, recurrent, or accompanied by shortness of breath, sweating, nausea, or faintness, seek urgent medical care immediately. If it is mild but recurring, a clinician should evaluate the cause before any medicine is started.