Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. Updated visitor guidelines. You are here Home » Using Nitroglycerin for Angina. Top of the page. Topic Overview What is nitroglycerin? Nitroglycerin comes in quick-acting forms and long-acting forms. Your doctor will prescribe the right amount for you. Do not use another person's nitroglycerin. When do I use quick-acting nitroglycerin? In general, quick-acting nitroglycerin is used: To relieve sudden angina.
Before stressful activities that can cause angina, such as walking uphill or having sexual intercourse. How do I use quick-acting nitroglycerin? Sit or lie down to take your nitroglycerin. If you are driving, pull over and park the car. Taking nitroglycerin can lower your blood pressure, which could cause you to pass out if you are standing up. For sudden episodes of angina, use nitroglycerin in a tablet or liquid spray form.
Place the under-the-tongue sublingual tablet under your tongue. Leave it there until it dissolves. If you accidentally swallow the tablet, take another.
The medicine won't work if it is swallowed. Nitroglycerin sublingual tablets are usually taken as needed to treat episodes of angina; do not take them on a regular basis.
Nitroglycerin sublingual may cause other side effects. Call your doctor if you have any unusual problems while you are taking this medication. Keep this medication in the container it came in, tightly closed after each use, and out of reach of children. Store it at room temperature and away from excess heat and moisture not in the bathroom. Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them.
However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. It is important to keep all medication out of sight and reach of children as many containers such as weekly pill minders and those for eye drops, creams, patches, and inhalers are not child-resistant and young children can open them easily.
To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location — one that is up and away and out of their sight and reach. In case of overdose, call the poison control helpline at If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at Before having any laboratory test, tell your doctor and the laboratory personnel that you are taking nitroglycerin sublingual.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription. It is important for you to keep a written list of all of the prescription and nonprescription over-the-counter medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements.
You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses. Store the extended-release capsules in a closed container at room temperature, away from heat, moisture, and direct light.
Sublingual tablets should be kept in the original glass bottle. Screw the cap on tightly after each use and store the bottle at room temperature, away from heat, moisture, and direct light. Store the oral spray at room temperature, away from heat and direct light.
Do not freeze. Do not keep this medicine inside a car where it could be exposed to extreme heat or cold. Do not forcefully open the container or throw it into a fire, even if it is empty.
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Doing so can cause dangerous effects in your body. Examples of these drugs include:. When you take nitroglycerin with certain drugs, nitroglycerin may not work as well to treat your condition. This is because the amount of nitroglycerin in your body may be decreased. However, because drugs interact differently in each person, we cannot guarantee that this information includes all possible interactions.
Always speak with your healthcare professional about possible interactions with all prescription drugs, vitamins, herbs and supplements, and over-the-counter drugs that you are taking. Drinking alcohol can increase your risk of very low blood pressure from this drug. If you drink alcohol, talk to your doctor. If you have an allergic reaction, call your doctor or local poison control center right away.
If your symptoms are severe, call or local emergency services or go to the nearest emergency room. Taking it again could be fatal cause death. A heart attack may cause severe, crushing pain that comes on suddenly. If you have signs of a heart attack, call right away. If you use this drug in this situation, it may lower your heart rate and blood pressure. For pregnant women: Studies of use of this drug in pregnant animals have not shown risk to the fetus. Therefore, this drug should only be used if the potential benefit justifies potential risk.
Call your doctor right away if you become pregnant while taking this drug. For women who are breastfeeding: Nitroglycerin may pass into breast milk and cause side effects in a child who is breastfed. Talk to your doctor if you breastfeed your child. You may need to decide whether to stop breastfeeding or stop taking this medication. For children: This medication has not been studied in children. It should not be used in people younger than 18 years.
This dosage information is for nitroglycerin sublingual tablet. All possible dosages and drug forms may not be included here. Your dosage, drug form, and how often you take the drug will depend on:.
This medication has not been studied in children. However, because drugs affect each person differently, we cannot guarantee that this list includes all possible dosages.
Always speak with your doctor or pharmacist about dosages that are right for you. Nitroglycerin sublingual tablet is used for short-term treatment.
Take it only when you have chest pain. If you take too much: You could have dangerous levels of the drug in your body. Symptoms of an overdose of this drug can include:.
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