Glyceryl trinitrate
Also sold as: Nitrostat, Angised
Prescription neededChest pain and heart rhythm
Comes as:TabletSkin patchDrip (infusion)
Usual adult dose
Chest pain: one tablet (300 to 500 micrograms) under the tongue while sitting; repeat after 5 minutes if needed. If pain is not better after 2 doses or 15 minutes, call an ambulance or go to hospital.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- headache
- flushing
- dizziness
- fast heartbeat
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- fainting
- very low blood pressure
Do not take it, or take care, if
- Taking sildenafil or similar medicines in the last 24 to 48 hours
- Very low blood pressure
- Severe anaemia
- Head injury or bleeding in the brain
- Severe narrowing of the aortic heart valve
Interactions
Medicines that can react with this one.
Serious1 medicineDo not take these together unless your doctor says so.
- Sildenafil
Nitrates with sildenafil can cause a dangerous fall in blood pressure; never combine.