Nitroglycerin
$0.96
Nitroglycerin relieves and prevents chest pain (angina) by quickly widening the blood vessels to improve blood flow to the heart.
Drug Information
15 reviews for Nitroglycerin
Nitroglycerin (also called glyceryl trinitrate or GTN) is a medicine for angina, which is chest pain caused by poor blood flow to the heart muscle.
This product (2.5 mg or 6.5 mg) is a slow-release form taken regularly to help prevent angina attacks. It is not for stopping a sudden attack. For sudden chest pain, you need a fast-acting GTN spray or tablet under the tongue, as prescribed by your doctor.
What is it used for?
- Preventing angina attacks (slow-release form)
How does it work?
Nitroglycerin releases nitric oxide, which relaxes and widens blood vessels. This lowers the amount of work the heart has to do and improves blood flow to the heart muscle.
This information is written in simple words to help you understand this product. It does not replace advice from your doctor or pharmacist.
Read these points before you start. If any of them apply to you, talk to your doctor or pharmacist first.
- Never take it with erection medicines such as sildenafil, tadalafil, vardenafil or avanafil. Together they can cause a dangerous drop in blood pressure.
- Do not take it with riociguat.
- Tell your doctor if you have low blood pressure, anaemia, a head injury, glaucoma, or a heart valve problem.
- Alcohol can make dizziness worse.
- Your body can get used to it if levels stay high all day. Your doctor may plan a daily "nitrate-free" period, often overnight.
- Tell your doctor or pharmacist about every other medicine, vitamin or herbal product you use.
- Keep this product out of the reach and sight of children.
Like all medicines, Nitroglycerin can cause side effects, but not everybody gets them.
Common side effects
- Headache, especially at first
- Flushing
- Dizziness or light-headedness, especially when standing
- Fast heartbeat
These are usually mild and often get better as your body gets used to it. Tell your doctor if they bother you or do not go away.
Stop using it and get medical help straight away if you notice:
- Fainting or very low blood pressure
- Chest pain that does not go away after using your fast-acting GTN (call an ambulance)
- Blue lips or fingers or trouble breathing
This is not a complete list. If you notice anything unusual, ask your doctor or pharmacist.
- Take it 2 or 3 times a day, exactly as your doctor tells you, leaving a gap overnight if advised.
- Swallow the slow-release tablet or capsule whole with water. Do not chew or crush it.
- For a sudden angina attack, use your fast-acting GTN spray or tablet. If the pain is not gone 5 minutes after the second dose, call an ambulance.
- Do not stop taking it suddenly, as this can bring on angina.
If you miss a dose: Take it as soon as you remember, unless it is nearly time for the next dose. Never take two doses at once.
If you use too much: Contact your doctor, a poison control centre or your local emergency number straight away, even if you feel fine. Take the pack with you.
How to store it: Keep it in its original pack at room temperature (below 25°C / 77°F), away from heat, damp and direct sunlight. Do not use it after the expiry date.
- QDoes Nitroglycerin stop a heart attack?
- A
No. It helps prevent and ease angina. If chest pain is severe or does not settle with your fast-acting GTN, call an ambulance straight away.
- QWhy do I get headaches on Nitroglycerin?
- A
It widens blood vessels in the head too. Headaches usually get better after a week or two. A simple painkiller like paracetamol can help.
- QWhy is there a break in my Nitroglycerin doses?
- A
Having a few hours each day with lower levels helps the medicine keep working over time.

Nicolas Moreno –
I ordered from here after comparing a few options. Adding it to the cart and paying was quick. I found the cost to be better than what I saw elsewhere.
Ade Traore –
I tried this site for Nitroglycerin after checking a couple of other places. It was packed with care, which I really noticed. Great experience, I have already bookmarked the site.
Kofi Colombo –
I placed an order last week and it was handled well. Everything on the product page was clear, so I knew what I was getting.
Mira Gupta –
For the price, I could not ask for more. Also, the wait for delivery was short and painless. The seals were intact and everything looked fresh. Easy to deal with, which is what I wanted.
Carolina Karlsson –
I decided to try this site and it turned out well. Packed properly, with nothing out of place. I think the pricing is fair for what you get.
Stefan Jenkins –
Ordering from this site was easy. The box was sturdy and the contents were well protected. It was what I expected when I opened it.
Felix Shin –
I used this site for my latest order and had no problems. Good value for the money. Ordering Nitroglycerin took only a few minutes.
Dmitri Rivera –
Found what I needed on this site without any trouble. Communication was good throughout the order. Delivery was quicker than I thought it would be. Overall, a smooth and simple experience.
Isabel Robert –
Pricing was reasonable and there were no hidden charges. I got an order confirmation right away and updates after that. My order showed up within the timeframe I was given. Highly satisfied with the service.
Benjamin Xu –
Just got my order and everything went well. I compared a few sites and this one had the better price. The wrapping was solid, nothing shifted around in transit. I would order Nitroglycerin here again.
Ngozi Wood –
I placed my first order here and it went smoothly. It was affordable and the total at checkout matched what I expected. On top of that, the right item came, and the label matched my order. Thanks for making Nitroglycerin so easy to order.
Claudia Abebe –
The expiry date was fine and everything looked as it should. Reasonably priced and the discount at checkout was a nice touch. Delivery was smooth with no surprises. I would recommend this site to friends and family.
Arjun Ricci –
A friend told me about this site, so I gave it a go. The whole ordering process felt easy and well organised. Plain, tidy packaging and everything inside was in order.
Kai Fischer –
I wanted Nitroglycerin and this site made it simple to order. They answered my email within a day. No surprise fees at checkout, which I appreciated.
Daniel Khan –
This was my second order from the site. Support was friendly and cleared up my doubt quickly. Placing the order took only a few minutes. The parcel arrived a day or two sooner than I figured. Everything went well, so I will be back.