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Glyceryl Trinitrate(2.5 mg)


Glyceryl Trinitrate(2.5 mg)


Glyceryl Trinitrate is used in the prevention and treatment of the chest pain associated with angina (when the blood supply to the muscles of the heart is restricted).

How it works

Glyceryl Trinitrate belongs to a group of medicines known as nitrates. Nitrates temporarily relax smooth muscles, including those  found in the walls of blood vessels in the heart. This reduces strain on the heart by making it easier for it to pump blood.

Common side effects

slight itching or burning sensation on the skin where you have applied the patch, worsening of the chest pain, nausea, low blood pressure and lightheadedness, allergic skin rash, vomiting, drowsiness, slowing of the heartbeat, or fainting while change in posture, Throbbing headaches, red skin with scaling and thickened itchy skin, pale skin and sweating, flushing of the face, rapid heartbeat and feeling weak, dizziness, heartburn.


No substitutes found

Expert advice

  • Do not take glyceryl trinitrate tablets, if you are allergic (hypersensitive) to glyceryl trinitrate.
  • Consult your doctor, if you are pregnant, planning to become pregnant or breast feeding.
  • Do not consume alcohol while taking glyceryl trinitrate.
  • This medicine may make you drowsy or dizzy. If affected, do not drive or operate machines.

Frequently asked questions

Glyceryl Trinitrate

Q. What does glyceryl trinitrate treat/ why is glyceryl trinitrate given/ is glyceryl trinitrate a beta blocker/ a vasodilator/ relieve angina/ does glycerol trinitrate work?
Glyceryl Trinitrate is used in the prevention and treatment of the chest pain associated with angina. It is not a beta blocker. It is a vasodilator. It relaxes most smooth muscle, including that found in the walls of blood vessels in the heart. This reduces strain on the heart by making it easier to pump blood.

Q. How glyceryl trinitrate is taken/why is glyceryl trinitrate administered sublingually? what is glyceryl trinitrate ointment?
Glycerol nitrate can be taken in a number of ways-sublingual tablets, sprays, ointment, transdermal patches. The time to peak concentration depends on the route of administration; it occurs after 2 minutes, 40 minutes and one hour after sublingual, oral and dermal administration respectively.

Q. What is glyceryl trinitrate spray used for/ how does glyceryl trinitrate spray work?
At the onset of an attack or prior to a precipitating event: one or two 400 microgram metered dose should be sprayed under the tongue. 

Q. Is glyceryl trinitrate harmful/ does glyceryl trinitrate cause stomach irritation?
Glyceryl trinitrate can be used safely at recommended doses and duration. It may cause stomach irritation and headache.

Q. Is glyceryl trinitrate explosive?
Yes, glycerol nitrate is used in making explosives and medically as a vasodilator.

Q. Does glyceryl trinitrate work like Viagra?
Viagra is used as treatment for anti-erectile dysfunction and glyceryl trinitrate for treatment of chest pain. Both work by dilation of venous and arteries which results in inflow of blood but the mechanisms are entirely different. Do not use nitrates to relieve an angina attack if the patient has recently taken viagra, use other angina treatments instead as the combination of these two can lead to a dangerous drop in blood pressure.

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