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. If you will be taking this medicine for a long time, it is very important that your doctor check your progress at regular visits to make sure this medicine is working properly.
Blood tests may be needed to check for unwanted effects. Using these medicines together may cause blurred vision, dizziness, lightheadedness, or fainting. If you are taking these medicines and you have an angina attack, you must go to the hospital right away.
This medicine may cause headaches. These headaches are a sign that the medicine is working. Do not stop using the medicine or change the time you use it in order to avoid the headaches. If you have severe pain, talk with your doctor. Dizziness, lightheadedness, or fainting may occur, especially when you get up quickly from a lying or sitting position.
Getting up slowly may help. Also, lying down for a while may relieve dizziness or lightheadedness. Dizziness, lightheadedness, or fainting is also more likely to occur if you drink alcohol, stand for long periods of time, exercise, or if the weather is hot.
While you are taking this medicine, be careful to limit the amount of alcohol you drink. Also, use extra care during exercise or hot weather or if you must stand for long periods of time.
Do not stop using this medicine without checking first with your doctor. Your doctor may want you to gradually reduce the amount you are using before stopping it completely. Blurred vision or dryness of the mouth may occur while using this medicine. Check with your doctor if this concerns you. Serious skin reactions can occur with this medicine. Check with your doctor right away if you have cracks in the skin, feeling of warmth, loss of heat from the body, rash, red, swollen skin, redness of the face, neck, arms, and occasionally, upper chest, or scaly skin while you are using this medicine.
Make sure any doctor or dentist who treats you knows that you are using this medicine. You may need to stop using this medicine several days before you have medical tests. Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription over-the-counter [OTC] medicines and herbal or vitamin supplements. Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.
Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:. You should not need a new prescription for this medication to be refilled. Your doctor will write the number of refills authorized on your prescription. To take this drug, place it under your tongue or on the inside of your cheek. Instead, let it dissolve in your mouth.
Your doctor may have you check your blood pressure and heart rate at home. You may need to buy your own blood pressure monitor to do this. You should keep a log of the date, time of day, and blood pressure readings.
Bring this journal with you to your checkups. This drug may lower your blood pressure and heart rate. Your doctor may check your blood pressure and heart rate before and during your treatment. They may also ask you to check your blood pressure and heart rate at home.
If your blood pressure and heart rate drop too low, your doctor may reduce your dosage, stop your treatment, or give you a different form of nitroglycerin. There are other drugs available to treat your condition. Some may be better suited for you than others. Talk to your doctor about other drug options that may work for you.
Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up-to-date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional.
You should always consult your doctor or other healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.
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Do not take the pulmonary hypertension medicine sildenafil Revatio if you are taking nitroglycerin or another nitrate medicine. Store nitroglycerin pills in a dark-colored such as brown , airtight, glass container that you cannot see through. Keep the container tightly closed.
Keep nitroglycerin pills and liquid spray away from heat or moisture. Nitroglycerin can get old. And when it is old, it may not work. If your nitroglycerin supply is past its expiration date, get a new prescription as soon as possible.
Keep your nitroglycerin in the container it came in and tightly closed. Do not open your sublingual nitroglycerin until you need a dose. Replace your tablets every 3 to 6 months. A nitroglycerin spray may last up to 2 years before it expires. You may get a headache when you use nitroglycerin.
Or you may feel burning or tingling under your tongue with nitroglycerin that is used under the tongue. But if you don't have a headache or feel burning or tingling under your tongue, it does not mean the medicine is not working.
Author: Healthwise Staff. Medical Review: Rakesh K. This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information.
Your use of this information means that you agree to the Terms of Use. Do not eat, drink, smoke, or use chewing tobacco while a tablet is dissolving. Nitroglycerin sublingual tablets usually give relief in 1 to 5 minutes. However, if the pain is not relieved, you may use a second tablet 5 minutes after you take the first tablet. If the pain continues for another 5 minutes, a third tablet may be used.
If you still have chest pain after a total of 3 tablets, contact your doctor or go to a hospital emergency room right away. Do not drive yourself and call , if necessary. You may administer 1 or 2 sprays of Nitroglycerin oral spray at the onset of chest pain. If the pain continues after 5 minutes, a third spray may be used. You must wait 5 minutes after the first 1 or 2 sprays before using a third spray. If you still have chest pain after a total of 3 sprays, contact your doctor or go to a hospital emergency room right away.
Do not drive yourself and call if necessary. Do not use more than 3 sprays in a minute period. You should take the extended-release capsule first thing in the morning and follow the same schedule each day. This medicine works best if you have a "drug-free" period of time every day when you do not take it.
Your doctor will schedule your doses during the day to allow for a drug-free time. Follow the schedule of dosing carefully so the medicine will work properly. The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label.
The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
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