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Nitro 2.6mg Tablet SR

Written By Dr. Syeda Aafia, MBA, BDS
Reviewed By Dr. Mekhala Chandra, MD, MBBS
Last updated on 19 Jan 2026 | 02:03 PM (IST)
Nitro 2.6mg Tablet SR is used to treat and prevent heart-related chest pain (angina). Angina occurs when the heart muscle is not getting enough blood. This medicine works by relaxing and widening blood vessels so blood can flow more easily to the heart.
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General Information

Contains

Nitroglycerin (2.6mg)

Salt Synonyms

Glyceryl Trinitrate

Marketer

Whitesky Pharma India Pvt Ltd

Storage

Store below 30°C
The content is shown in English
Nitro 2.6mg Tablet SR image
Nitro 2.6mg Tablet SR image

Product introduction

Nitro 2.6mg Tablet SR should be taken in the dose and duration as advised by your doctor. It may be taken with or without food, preferably at a fixed time each day. Do not consume more than the recommended dose, as this may have harmful effects on your body. You can develop tolerance to this medicine over time, which means that the same dose becomes less effective. You have to stick to a really specific dosing schedule to prevent this from happening.


The most common side effect of this medicine is a headache, which may be severe. This can sometimes be helped by drinking plenty of fluids and avoiding alcohol. You may also experience lightheadedness, which could increase your risk of having a fall. There are other, rarer side effects, some of them serious. Ask your doctor and read the leaflet that comes with the medicine to make sure you are keeping safe.


Do not use this medicine if you are taking medicines to treat high blood pressure in your lungs (pulmonary hypertension), erectile dysfunction, or if you have anemia or glaucoma (increased pressure inside the eye). Always tell your doctor what other health conditions you have and what other medicines you are taking. It is best not to drink alcohol with this medicine as it increases some of the side effects. If you are affected by dizziness, avoid driving. If you are pregnant, planning to become pregnant, or breastfeeding, ask your doctor before taking this medicine.

Uses of Nitro Tablet SR

Benefits of Nitro Tablet SR

Angina (heart-related chest pain)
Angina is chest pain or discomfort that happens when the heart doesn’t get enough oxygen-rich blood, often triggered by physical activity or stress. Nitro 2.6mg Tablet SR helps relieve the pain and reduces the chances of future episodes, making it easier to move around and stay active without discomfort. It improves overall heart comfort and allows individuals to carry out daily tasks with greater ease and confidence.

Side effects of Nitro Tablet SR

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Nitro
  • Headache

How to use Nitro Tablet SR

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Nitro 2.6mg Tablet SR may be taken with or without food.

How Nitro Tablet SR works

Nitro 2.6mg Tablet SR is a nitrate. It works by relaxing the blood vessels and increasing the supply of blood and oxygen to the heart while reducing its workload, thereby preventing/treating attacks of angina (chest pain).

Quick tips

  • Nitro 2.6mg Tablet SR may cause dizziness or sleepiness. Do not drive or do anything that requires concentration until you know how it affects you.
  • Do not consume alcohol while taking Nitro 2.6mg Tablet SR, as it may cause increased dizziness.
  • It may cause headaches, which usually go away after a few days of continued treatment. Inform your doctor if it persists.
  • You may develop tolerance to Nitro 2.6mg Tablet SR with time, meaning that the same dose may be less effective next time. Follow the prescribed dosing schedule to avoid this.
  • Stop taking medications (prescribed for erectile dysfunction) like sildenafil or tadalafil while on treatment with Nitro 2.6mg Tablet SR, as it may cause low blood pressure.

Safety advice

Alcohol

Alcohol

CAUTION
Alcohol should be used with caution while taking Nitro 2.6mg Tablet SR.
Pregnancy

Pregnancy

CONSULT YOUR DOCTOR
The safety of Nitro 2.6mg Tablet SR during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.
Breast feeding

Breast feeding

CONSULT YOUR DOCTOR
Information regarding the use of Nitro 2.6mg Tablet SR during breastfeeding is not available. Please consult your doctor.
Driving

Driving

UNSAFE
Nitro 2.6mg Tablet SR may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.
Kidney

Kidney

CAUTION
Nitro 2.6mg Tablet SR should be used with caution in patients with kidney disease. Dose adjustment may be needed.
Liver

Liver

CAUTION
Nitro 2.6mg Tablet SR should be used with caution in patients with liver disease. Dose adjustment may be needed.

Interaction with drugs

Taking Nitro with any of the following medicines can modify the effect of either of them and cause some undesirable side effects
Life-threatening

Sildenafil (Oral Route)

Do not consume Sildenafil with Nitroglycerin. If Sildenafil is essential, ensure a gap of at least 24 hours after discontinuing Nitroglycerin. Please consult your doctor.
Life-threatening

Tadalafil (Oral Route)

Do not consume Tadalafil with Nitroglycerin. If Tadalafil is essential, ensure a gap of at least 48 hours between taking Tadalafil and Nitroglycerin.
Life-threatening

Sildenafil (Oral Route)

Do not consume Sildenafil with Nitroglycerin. If Sildenafil is essential, ensure a gap of at least 24 hours after discontinuing Nitroglycerin. Please consult your doctor.
Life-threatening

Sildenafil (Injection Route)

Do not consume Sildenafil with Nitroglycerin. If Sildenafil is essential, ensure a gap of at least 24 hours after discontinuing Nitroglycerin. Please consult your doctor.
Life-threatening

Sildenafil (Injection Route)

Do not consume Sildenafil with Nitroglycerin. If Sildenafil is essential, ensure a gap of at least 24 hours after discontinuing Nitroglycerin. Please consult your doctor.

Frequently asked questions

No, you should not take sildenafil if you are taking Nitro 2.6mg Tablet SR. Taking these two medicines together can cause an excessive fall in blood pressure, which may even be life-threatening.
Nitro 2.6mg Tablet SR decreases the blood pressure by relaxing the blood vessels, but is not recommended for the treatment of high blood pressure. The drop in blood pressure may cause lightheadedness, especially when changing your position suddenly.
Yes, excessive use of Nitro 2.6mg Tablet SR may cause tolerance, which means that Nitro 2.6mg Tablet SR may lose its effectiveness on you. Therefore, usually the doctors prescribe the smallest dose required for effective relief of an acute angina attack. This helps maintain the effectiveness of Nitro 2.6mg Tablet SR.
Excess Nitro 2.6mg Tablet SR may result in low blood pressure, sweating, nausea, vomiting, headache, weak and fast pulse. It may also cause weakness, lightheadedness on standing, and the patient might even faint. The patient will require emergency medical treatment in such a case.
Stopping Nitro 2.6mg Tablet SR suddenly may bring on attacks of angina, especially if you have been using it for several weeks or more. Talk to your doctor, who will advise you to reduce the dose gradually over 4 to 6 weeks before you stop using it completely.
Nitro 2.6mg Tablet SR is prescribed to prevent attacks of heart-related chest pain (angina) in patients with coronary artery disease. In this disease, the blood vessels (coronary arteries) that supply blood to the heart become narrowed, because of which the heart has to work harder to get enough oxygen. Nitro 2.6mg Tablet SR prevents angina by relaxing the blood vessels so that the heart does not have to work very hard. Also, relaxation of the coronary arteries increases the oxygen supply to the heart.

Fact Box

Chemical Class

Alkyl nitrates

Habit Forming

No

Therapeutic Class

CARDIAC

Action Class

Nitric Oxide (NO) Donors

References

  1. Michel T, Hoffman BB. Treatment of Myocardial Ischemia and Hypertension. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. 12th ed. New York, New York: McGraw-Hill Medical; 2011. pp. 747-55.
  2. Katzung BG, Chatterjee K. Vasodilator & the Treatment of Angina Pectoris. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. pp. 191, 195-97.
  3. Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 986-88.
  4. Nitroglycerin [Summary of Product Characteristics]. Modipuram, India: Modi-Mundipharma Pvt. Ltd.; 2023.
  5. Nitroglycerin Sublingual [Prescribing Information]. New York, NY: Parke-Davis; 2014. [Accessed 20 Mar. 2019] (online) Available from:
  6. Drugs and Lactation Database (LactMed) [Internet]. Bethesda (MD): National Library of Medicine (US); 2006. Nitroglycerin. [Updated 2018 Oct 31]. [Accessed 19 Feb. 2020] (online) Available from:
  7. Central Drugs Standard Control Organisation (CDSCO). Nitroglycerin. [Accessed 19 Mar. 2019] (online) Available from:
  8. Kim KH, Kerndt CC, Adnan G, et al. Nitroglycerin. [Updated 2022 Sep 27]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023. [Accessed 02 Aug. 2023] (online) Available from:
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Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Whitesky Pharma India Pvt Ltd
Address: Shop No.III/382 B2, Maliyekkal Tower, south of MSM College Kayamkulam,Alappuzha,Kerala-690502

Vendor Details

Country of origin: India

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