What is Glyceryl Trinitrate (GTN)?

Glyceryl Trinitrate (GTN) is a medicine used to help people with heart problems, especially angina. Angina is chest pain that happens when the heart does not get enough oxygen. GTN works by relaxing and widening blood vessels, allowing more blood and oxygen to reach the heart.

How Does GTN Work?

GTN belongs to a group of medicines called nitrates. It helps to relax the muscles in blood vessels, which reduces pressure on the heart. This makes it easier for the heart to pump blood and lowers the risk of chest pain.

Uses of GTN

• Treating angina (chest pain)
• Preventing angina before activities like exercise
• Helping in heart failure treatment
• Used in emergencies for heart-related problems

Forms of GTN

GTN is available in different forms, such as:

• Tablets – Placed under the tongue for quick relief
• Sprays – Sprayed under the tongue for fast action
• Patches – Stuck to the skin to release medicine slowly
• Ointments – Applied to the skin for longer effects
• Injections – Given in hospitals for serious heart conditions

How to Use GTN

• When using tablets or sprays, sit down and place the tablet under your tongue or spray the medicine inside your mouth. Wait for it to work.
• If you have a patch, apply it to clean, dry skin.
• Always follow the doctor’s advice on how to use GTN safely.

Possible Side Effects

Like all medicines, GTN may cause some side effects, such as:

• Headache
• Dizziness
• Low blood pressure
• Flushing (red or warm skin)
• Feeling sick (nausea) If side effects are severe or do not go away, it is important to seek medical help.

Who Should Not Use GTN?

GTN is not for everyone. People who should avoid it include those who:

• Are allergic to nitrates
• Have very low blood pressure
• Take certain medicines for erectile dysfunction (like sildenafil)
• Have severe anemia (low red blood cell count)

Conclusion

Glyceryl Trinitrate (GTN) is an important medicine for people with heart problems. It helps improve blood flow, reduces chest pain, and supports heart health. However, it must be used correctly and under medical guidance to avoid risks. If you have heart issues, talk to your doctor about whether GTN is right for you.