Tablet
Niptro-SR 2.6 mg Tablet
Generic: Glyceryl Trinitrate (GTN / Nitroglycerin)
Manufacturer: Bexter Pharmaceuticals
Therapeutic class: Nitrate Vasodilator (Anti-anginal)
What is Niptro-SR used for?
Niptro-SR (Tablet) contains Glyceryl Trinitrate (GTN / Nitroglycerin) 2.6 mg and is made by Bexter Pharmaceuticals. Therapeutic class: Nitrate Vasodilator (Anti-anginal).
What is Niptro-SR?
Niptro-SR 2.6 mg tablet contains glyceryl trinitrate, also known as nitroglycerin, a nitrate vasodilator. It is used in heart-related chest pain, helping prevent or manage angina caused by reduced blood flow to the heart.
Niptro-SR 2.6 mg tablet is a medicine from Bexter Pharmaceuticals that contains Glyceryl Trinitrate (GTN / Nitroglycerin), a fast-acting nitrate used to relieve and prevent angina — the tight, squeezing chest pain that occurs when the heart muscle does not get enough blood. Sublingual (under-the-tongue) forms act within minutes; longer-acting forms are used for prevention.
Glyceryl trinitrate is converted in the body to nitric oxide, a natural signal that relaxes the muscle in blood vessel walls. Veins widen first, so less blood returns to the heart and its workload drops; the coronary arteries that feed the heart muscle also widen. The heart then needs less oxygen while receiving more — which is why the chest pain eases within minutes of a sublingual dose.
Indications
- Acute angina attack — rapid relief of chest pain (sublingual tablet or spray)
- Prevention before exertion — taken minutes before activity known to trigger chest pain, such as climbing stairs
- Angina prophylaxis — longer-acting tablets or patches to reduce attack frequency
- Hospital uses — heart attack, acute heart failure and blood pressure control during surgery (infusion form)
- Anal fissure — special ointment form, as prescribed
Dosage & Administration
ChamberBD shows dosing only from the approved product label, with its source named, and no label is on file for Niptro-SR 2.6 mg Tablet. Use the dose your doctor prescribed and the instructions in the pack leaflet.
Side Effects
Most side effects come from blood vessels widening and are strongest in the first doses:
- Throbbing headache — very common; usually eases with continued use and responds to paracetamol
- Flushing, warmth of the face and neck
- Dizziness, light-headedness or faintness, especially on standing
- Fast heartbeat (palpitations)
- Low blood pressure; nausea
- Burning or tingling under the tongue (sublingual forms) — a sign the tablet is active
- Seek help if: fainting, severe persistent dizziness, blurred vision, or chest pain that does not settle
Precautions & Warnings
- Always sit down before taking a sublingual dose — the sudden pressure drop can cause fainting if you are standing.
- Carry Niptro-SR with you at all times; an angina attack cannot be scheduled.
- Do not drink alcohol around dosing — it multiplies the pressure drop.
- Rise slowly afterwards; avoid driving until dizziness passes.
- Tell your doctor if attacks become more frequent, occur at rest or wake you at night — this is unstable angina and needs urgent review.
- With regular long-acting nitrates, the body develops tolerance — your doctor will plan a daily nitrate-free interval; do not add extra doses yourself.
- Check the expiry and replace sublingual tablets as advised once the bottle is opened — old tablets lose potency.
Drug Interactions
- Erectile dysfunction medicines (sildenafil, tadalafil, vardenafil): absolutely must not be combined — together they can cause a catastrophic, life-threatening fall in blood pressure. A gap of at least 24 hours (sildenafil) or 48 hours (tadalafil) is required, decided by a doctor
- Riociguat: similarly contraindicated
- Other blood pressure medicines, beta-blockers, calcium channel blockers, diuretics: additive pressure drop
- Alcohol: increases dizziness and hypotension
- Ergotamine (migraine): nitrates can oppose it and ergotamine can worsen angina
- Heparin (infusion setting): effect may be reduced
Tell your doctor about all medicines you use — especially any medicine for erection problems.
Contraindications
- Allergy to glyceryl trinitrate or other nitrates
- Use of sildenafil, tadalafil, vardenafil or riociguat within the prohibited interval
- Severe low blood pressure or shock; severe anaemia
- Raised pressure inside the skull (head injury, brain haemorrhage)
- Hypertrophic obstructive cardiomyopathy, severe aortic stenosis, constrictive pericarditis (specialist assessment needed)
- Closed-angle glaucoma
Pregnancy & Lactation
Pregnancy: Glyceryl trinitrate is used in pregnancy only if the doctor judges the benefit outweighs the risk — human data are limited. It is sometimes used in hospital obstetric settings under specialist supervision. Tell your doctor if you are or may be pregnant before using it regularly.
Lactation: It is not known how much passes into breast milk. Occasional sublingual use is unlikely to be a problem, but discuss regular use with your doctor, who will weigh the options and monitor the baby if needed.
Storage Conditions
Storage is critical for this medicine: glyceryl trinitrate evaporates and loses potency easily. Keep sublingual tablets in the original glass container, tightly closed, without cotton wool or other tablets inside, away from heat, light and moisture — not in a car or pocket close to the body for long periods. Store below 25–30°C, replace opened sublingual tablets as advised (often every 8 weeks to 6 months per manufacturer), and keep out of the reach of children. Spray forms last longer — check the label and expiry date.
Frequently Asked Questions
How should I store Niptro-SR so it keeps working?
This medicine evaporates easily, and weak tablets may fail you in an emergency. Keep sublingual tablets in their original tightly-closed glass container — never transfer them to a pill box or plastic bag, never store cotton wool or other tablets in the bottle, and keep it away from heat, light and dampness (not the car dashboard, not a trouser pocket against the body all day). Replace opened tablets as the pack advises, and check the tingling under the tongue — little or no tingling can mean the tablets have lost strength and need replacing. Always carry it with you.