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Capsule

Nitrin 2.6 mg Capsule

Generic: Glyceryl Trinitrate (GTN / Nitroglycerin)

Manufacturer: Healthcare Pharmaceuticals Ltd.

Therapeutic class: Nitrate Vasodilator (Anti-anginal)

What is Nitrin used for?

Nitrin (Capsule) contains Glyceryl Trinitrate (GTN / Nitroglycerin) 2.6 mg and is made by Healthcare Pharmaceuticals Ltd. Therapeutic class: Nitrate Vasodilator (Anti-anginal).

What is Nitrin?

Nitrin 2.6 mg Capsule contains glyceryl trinitrate, also called nitroglycerin, a nitrate vasodilator. It is used in heart-related chest pain (angina) by relaxing blood vessels and reducing the heart’s workload.

Nitrin 2.6 mg capsule is a medicine from Healthcare Pharmaceuticals Ltd. 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 Nitrin 2.6 mg Capsule. 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 Nitrin 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 Nitrin 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.

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