Advanced search

Report side effect

Report a suspected side effect or falsified product to the MHRA Yellow Card scheme.
Go to {yellow_card_logo} site
{arrow_up} Back to top

Glytrin, 400 micrograms per metered dose, sublingual spray

Active Ingredient:
glyceryl trinitrate
Aspire Pharma Ltd See contact details
ATC code: 
About Medicine
The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine.
Last updated on emc: 19 Jun 2023

Below is a text only representation of the Patient Information Leaflet (ePIL).

The text only version may be available in large print, Braille or audio CD. For further information call emc accessibility on {phone} 0800 198 5000. The product code(s) for this leaflet is: PL16431/0017.


Package leaflet: Information for the user


400 micrograms per metered dose, Sublingual spray

Glyceryl Trinitrate

Read all of this leaflet carefully before you start using this medicine because it contains important information for you.
  • Keep this leaflet. You may need to read it again.
  • If you have any further questions, ask your doctor or pharmacist.
  • This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours.
  • If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. See section 4.

What is in this leaflet

1. What Glytrin is and what it is used for
2. What you need to know before you use Glytrin
3. How to use Glytrin
4. Possible side effects
5. How to store Glytrin
6. Contents of the pack and other information

1. What Glytrin is and what it is used for

Your medicine is called Glytrin.

It is a sublingual (under the tongue) aerosol spray that contains the active ingredient glyceryl trinitrate. Glyceryl trinitrate belongs to a group of medicines called nitrates that relax the muscle walls of the blood vessels and reduce the workload of the heart.

Glytrin is used to treat angina at the onset of an attack. It is also used for the prevention of angina, which can be brought on from physical effort, emotional stress, and exposure to cold, etc.

2. What you need to know before you use Glytrin
Do not use Glytrin and talk to your doctor:
  • If you are allergic to glyceryl trinitrate or any of the other ingredients of this medicine (listed in section 6).
  • If you have severe low blood pressure.
  • If you have shock caused by low blood pressure.
  • If you have severe anaemia.
  • If you have constrictive pericarditis (a heart condition).
  • If you have an extremely low heart rate.
  • If you have a brain trauma or cerebral haemorrhage (brain or head injury, including bleeding).
  • If you have narrowing of the heart valves or arteries or angina caused by a disease of the heart muscle.
  • If you have circulatory collapse (a failure of blood circulation).
  • If you have toxic pulmonary oedema (lung swelling/ fluid).
  • If you have cardiogenic shock (a serious heart condition caused by very low blood pressure, which may result in the following symptoms: dizziness and lightheadedness, fast pulse rate, white skin, sweating, restlessness or loss of consciousness).

Do not use Glytrin if you are taking:

  • riociguat to treat pulmonary hypertension.
  • sildenafil, tadalafil, vardenafil or other similar phospho-diesterase inhibitors used to treat male erectile dysfunction (impotence).

Warnings and precautions

Talk to your doctor before using Glytrin if any of the following apply to you:

  • Fluid around the heart (pericardial tamponade).
  • Low filling pressures (e.g. acute myocardial infarction).
  • Problems controlling your blood pressure.
  • Any disease that increases pressure on the brain.
  • Glaucoma (a condition in which the pressure in the eye may be high).
  • Liver or kidney problems.
  • An underactive thyroid gland.

Please consult your doctor, even if these statements were applicable to you at any time in the past. You may need to be more closely supervised during treatment.

Children and adolescents

Do not give this medicine to children and adolescents under 18 years.

Other medicines and Glytrin

Tell your doctor if you are taking, have recently taken or might take any other medicines.

Do not use Glytrin if you are taking:
  • Riociguat used to treat pulmonary hypertension
  • Sildenafil, tadalafil, vardenafil or other similar phospho-diesterase inhibitors used to treat male erectile dysfunction (impotence).

Talk to your doctor before using Glytrin if you are taking or have recently taken any of the following:
  • Medicines to treat blood pressure or heart problems, such as vasodilators, antihypertensives, betablockers and calcium channel blockers.
  • Tricyclic anti-depressants or neuroleptics, used to treat mental health conditions.
  • Diuretics (water tablets to increase amount of urine produced).
  • Dihydroergotamine, used to treat migraine headaches.
  • Heparin, a blood thinner used to prevent blood clots. Your doctor will need to monitor you more closely.
  • Organic nitrates (other acute angina treatments).

Glytrin with alcohol

Be careful about drinking alcohol as Glytrin may affect you more than usual. Both alcohol and Glytrin may lower your blood pressure and slow down your reactions.

Pregnancy and breast-feeding

If you are, or think you might be pregnant, ask your doctor for advice before taking this medicine. Glytrin should not be used if you are breastfeeding.

Driving and using machines

Your reactions may slow down. Therefore, you should avoid driving and using machinery whilst taking Glytrin.

Glytrin contains ethanol

This medicine contains 7.5 mg of alcohol (ethanol) in each spray. The amount in one spray of this medicine is equivalent to less than 1 ml beer or 1 ml wine.

The small amount of alcohol in this medicine will not have any noticeable effects.

Continuous use warning

Continuous use of Glytrin and other nitrates may reduce effectiveness at relieving your symptoms, so high continuous doses should be avoided.

3. How to use Glytrin

1. Glytrin is not recommended for children.
2. Always use this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.
3. Learn how to use Glytrin before the onset of an angina attack, as you may need to use it in a hurry, or in the dark. Familiarise yourself with the spray button, which has a finger rest to help you direct the spray.
4. Keep a spare handy at all times, as it can be difficult to tell how many doses are left in the canister.
5. Do not use Glytrin if you are near a naked flame, e.g. a cigarette.
6. Before using Glytrin for the first time, check that the spray is working by pressing the pump button a few times until it produces a fine mist of liquid. Practice aiming the spray onto a tissue or similar item so that you will be able to aim it correctly under the tongue when you need to use it. If you do not need to use Glytrin very often, remember to check the spray regularly to see that it still works properly.
7. To use Glytrin

  • Sit down.
  • Hold the canister upright and near your mouth.
  • Hold your breath.
  • Aim the spray under your tongue.
  • Press down the button firmly, once only.
  • Close your mouth immediately.
  • Do not inhale the spray.

8. At the onset of an attack, the recommended dose is one or two sprays under your tongue. If symptoms do not resolve, you can repeat this at 5-minute intervals for a maximum of three sprays in total. If, after that, your symptoms have still not resolved, please seek immediate medical attention. For the prevention of an attack, the recommended dose is one or two sprays 2 to 3 minutes prior to activity likely to cause angina.
9. After using Glytrin, rest for a while. When you stand up, rise slowly, as you may feel faint.

If you use more Glytrin than you should

Special treatment is not normally required. Overdose symptoms are usually the same as the stated side effects. Some people may experience a reaction similar to shock, with nausea, weakness and sweating. If you feel faint sit down and raise your legs. Contact your doctor if your symptoms do not improve. Rarely a bluish colour to lips/fingers may occur (cyanosis or methaemoglobinaemia). If this happens contact your doctor immediately.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everyone gets them.

If you experience one of the following rare serious side effects (may affect up to 1 in 1,000 people unless specified), stop taking Glytrin immediately and consult your doctor:
  • An allergic skin reaction (with or without rash).
  • Tongue blistering (may affect up to 1 in 100 people)
  • Fainting
  • A severe fall in blood pressure on standing up
  • Worsening of the original angina symptoms.
  • Failure of the blood circulation (decrease in blood pressure, may be followed by loss of consciousness and collapse)
  • Transient hypoxaemia (deprived oxygen supply) (bluish colouration of the lips, hands or feet, may be followed by loss of consciousness)
  • Patients with coronary heart disease may experience a restriction in blood supply.

Continuous use may result in a tolerance to Glytrin, reducing its effectiveness. If symptoms are not relieved, medical advice should be sought immediately.

Other known side effects are:

Very common (may affect more than 1 in 10 people): Headache

Common (may affect up 1 in 10 people): Vertigo (spinning sensation), dizziness, nausea, facial flushing, weakness

Uncommon (may affect up to 1 in 100 people): Burning sensation, stinging sensation

Rare (may affect up to 1 in 1,000 people): Severe fall in blood pressure, heart rhythm change

Very rare (may affect up to 1 in 10,000 people): Flaking or peeling skin

Reporting of side effects

If you get any side effects, talk to your doctor. This includes any possible side effects not listed in this leaflet.

You can also report side effects directly via the Yellow Card Scheme Website: or search for MHRA Yellow Card in the Google Play or Apple App Store.

By reporting side effects, you can help provide more information on the safety of this medicine.

5. How to store Glytrin
  • Keep this medicine out of the sight and reach of children.
  • Do not use this medicine after the expiry date which is stated on the carton and the container label after EXP. The expiry date refers to the last day of that month.
  • Do not store above 25°C. Do not refrigerate or freeze.
  • Glytrin is an aerosol spray and contains a pressurised liquid. Do not expose to temperatures higher than 50°C. Do not pierce the canister, even when empty. Do not spray at or use near a naked flame.
  • Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information
What Glytrin contains
  • The active substance is glyceryl trinitrate. Each spray of Glytrin contains 400 micrograms of glyceryl trinitrate.
  • The other ingredients are peppermint oil, ethanol and 1,1,1,2 tetrafluoroethane (the propellant).

What Glytrin looks like and contents of the pack
  • Glytrin is a colourless spray presented in an aluminium container (canister), with a metered dose spray nozzle, and a cap.
  • Each container contains enough product for 200 sprays.

Marketing Authorisation Holder and Manufacturer

Marketing Authorisation Holder:

Ayrton Saunders Ltd
9 Arkwright Road
Astmoor Industrial Estate


Pharmaserve North West Ltd
9 Arkwright Road
Astmoor Industrial Estate

This leaflet was last revised in

March 2023

Aspire Pharma Ltd
Company image
4 Rotherbrook Court, Bedford Road, Petersfield, Hampshire, GU32 3QG, UK
+44 (0)1730 231148
Medical Information Direct Line
+44 (0)1730 231148
Customer Care direct line
+44 (0)1730 231148