Trandolapril Capsules

ACE inhibitors play an established role across a range of cardiovascular conditions, from treating high blood pressure to supporting heart recovery after a myocardial infarction. Trandolapril capsules are a prescription-only ACE inhibitor used in adults for hypertension treatment, stable chronic heart failure, and left ventricular dysfunction following myocardial infarction. Acting on the renin-angiotensin system, trandolapril provides blood pressure control and cardiac protection as part of comprehensive cardiovascular therapy. A prescription can only be issued following a clinical consultation.

Trandolapril capsules are an oral prescription medicine containing trandolapril as the active ingredient. Trandolapril belongs to the ACE inhibitor class of medicines, which act on the renin-angiotensin system to lower blood pressure and support cardiac function. Trandolapril is a prodrug that is converted in the body to trandolaprilat, its active form, which exerts the ACE-inhibiting effect.

Trandolapril is licensed in the UK for three indications. The first is the treatment of mild to moderate hypertension in adults. The second is the treatment of mild to moderate stable chronic heart failure in adults with reduced left ventricular function. The third is the treatment of left ventricular dysfunction following myocardial infarction (heart attack) in adults who are haemodynamically stable, typically starting two to nine days after the event.

Four capsule strengths are available: 0.5 mg, 1 mg, 2 mg, and 4 mg. The lower strengths support very cautious dose initiation in the post-MI and heart failure settings, where blood pressure and cardiac function must be monitored carefully during titration. The higher strengths are maintenance doses used across all indications.

Trandolapril lowers blood pressure and supports cardiac function through its action on the renin-angiotensin system.

The Renin-Angiotensin System

The renin-angiotensin system is a hormonal pathway central to blood pressure regulation and fluid balance. Renin released by the kidneys triggers a cascade ending in the production of angiotensin II, a hormone that causes blood vessels to narrow and promotes sodium and water retention. These effects raise blood pressure. Over time, sustained angiotensin II activity contributes to cardiac remodelling after a myocardial infarction and accelerates deterioration in heart failure.

ACE Inhibition by Trandolapril

Trandolaprilat blocks the ACE enzyme, preventing the conversion of angiotensin I to angiotensin II. Without angiotensin II, blood vessels remain relaxed, sodium retention is reduced, and blood pressure falls. Trandolaprilat also inhibits the breakdown of bradykinin, a compound that contributes additional vasodilation but is also responsible for the dry cough associated with all ACE inhibitors.

In heart failure and post-MI left ventricular dysfunction, reducing the hormonal drive to raise vascular resistance and retain fluid reduces the mechanical load on the damaged heart. This slows the process of adverse cardiac remodelling and, in the post-MI setting, reduces the risk of further cardiovascular events. These benefits are the basis for trandolapril's licensed use beyond hypertension and represent important aspects of cardiovascular therapy in these patient groups.

Always take trandolapril exactly as your prescriber instructs. The information below summarises key points from the current UK SmPC. Read the Patient Information Leaflet supplied with your medicine before starting treatment.

• Take trandolapril once daily, at approximately the same time each day.
• Trandolapril can be taken with or without food.
• Swallow the capsule whole with a glass of water. Do not open or crush the capsule.
• If you miss a dose, take it as soon as you remember on the same day. If you only remember the following day, skip the missed dose and continue as normal. Do not take two doses on the same day.
• Do not stop taking trandolapril without speaking to your prescriber first. Hypertension, heart failure, and post-MI care all require ongoing treatment.
• Your prescriber will start you at a low dose and increase it gradually over several weeks based on your blood pressure, kidney function, and potassium levels.
• A first dose blood pressure drop is a known risk with ACE inhibitors, particularly in patients who are volume depleted or on diuretics, and especially in the heart failure and post-MI settings. Your prescriber will manage this through careful titration and monitoring.
• Attend all follow up appointments to ensure safe and effective dose optimisation.

Trandolapril capsules are available in four strengths that support careful dose titration across all licensed indications.

Trandolapril 0.5 mg Capsules

The 0.5 mg capsule is used for very cautious dose initiation, particularly in post-MI left ventricular dysfunction and heart failure, where the starting dose per the SmPC is 0.5 mg once daily. In these settings, patients may be sensitive to blood pressure falls with the first dose, and starting at the lowest possible strength allows the prescriber to confirm tolerability before any increase. It may also be used in hypertension when extra caution is needed, such as in older patients or those at risk of a significant first dose blood pressure drop.

Trandolapril 1 mg Capsules

The 1 mg capsule is used during dose titration across all indications. For hypertension, the SmPC recommends an initial dose of 0.5 mg once daily, increased to 1 mg after one to two weeks if tolerated. The 1 mg strength is a common early maintenance dose for patients whose blood pressure is controlled at this level. For post-MI and heart failure, 1 mg is one of the intermediate titration doses between 0.5 mg and the target of 4 mg.

Trandolapril 2 mg Capsules

The 2 mg capsule is an intermediate strength used during titration toward the maintenance dose in all indications. For hypertension, 2 mg is within the usual maintenance dose range. The target dose for heart failure and post-MI left ventricular dysfunction is 4 mg once daily, and the 2 mg strength forms part of the stepwise increase toward that target.

Trandolapril 4 mg Capsules

The 4 mg capsule is the maximum recommended dose and the target maintenance dose for all three licensed indications. For hypertension, 4 mg once daily is used when lower doses have not achieved adequate blood pressure control. For heart failure and post-MI, 4 mg once daily is the target dose specified in the SmPC, reached through gradual titration over several weeks. All dose adjustments are made by your prescriber. Do not change your dose without medical advice.

Like all medicines, trandolapril can cause side effects. The information below is based on the current UK SmPC. Refer to the Patient Information Leaflet for the full list.

Common Side Effects (may affect up to 1 in 10 people)

• Dry, persistent cough. This is the most common side effect of trandolapril and all ACE inhibitors. It is caused by bradykinin accumulation and can develop at any time during treatment. If troublesome, speak to your prescriber, who may consider switching to an ARB.
• Dizziness or lightheadedness, particularly on standing. More common at the start of treatment or after a dose increase.
• Headache.
• Fatigue.

Uncommon Side Effects (may affect up to 1 in 100 people)

• Nausea or gastrointestinal discomfort.
• Raised blood potassium (hyperkalaemia).
• Changes in kidney function, particularly in patients with pre existing kidney disease.
• Skin rash.

Serious Side Effects: Seek Urgent Medical Attention

Go to your nearest accident and emergency department or call 999 immediately if you experience:

• Angioedema: sudden swelling of the face, lips, tongue, or throat. This is rare but potentially life threatening and is a class effect of all ACE inhibitors. Throat swelling can obstruct breathing and requires emergency medical care immediately. If you have had angioedema from any ACE inhibitor, you must not take trandolapril.
• Signs of severely raised potassium such as muscle weakness, an irregular heartbeat, or confusion.
• A marked reduction in urine output, which may indicate acute kidney injury.

Report any suspected side effect to your prescriber, pharmacist, or via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk.

Trandolapril Capsules May Be Suitable If You:

• Are an adult with a confirmed diagnosis of mild to moderate hypertension.
• Have stable mild to moderate chronic heart failure with reduced left ventricular function, and are under specialist supervision.
• Have left ventricular dysfunction following a myocardial infarction and are haemodynamically stable, and are under specialist supervision.
• Are already prescribed trandolapril and require a repeat prescription through an online prescribing service.

Trandolapril Capsules Are Not Suitable If You:

• Are pregnant or planning to become pregnant. Trandolapril is contraindicated in pregnancy. ACE inhibitors cause serious harm to the developing baby, particularly in the second and third trimesters, including kidney damage and foetal death. Contact your prescriber immediately if you become pregnant while taking trandolapril.
• Are breastfeeding.
• Have a history of angioedema related to previous ACE inhibitor treatment, or hereditary or idiopathic angioedema.
• Have severe kidney impairment or are on dialysis.
• Have significant liver disease. Trandolapril requires hepatic conversion to its active form.
• Are taking aliskiren and have diabetes or moderate to severe kidney impairment.
• Have a known allergy or hypersensitivity to trandolapril, any other ACE inhibitor, or any excipient listed in the SmPC.
• Are under 18 years of age.

Tell your prescriber about all medicines you take. Key interactions for trandolapril include:

• Potassium supplements, potassium-sparing diuretics (such as spironolactone or amiloride), and potassium-containing salt substitutes: these can raise blood potassium to dangerous levels when combined with trandolapril.
• NSAIDs such as ibuprofen: regular use can reduce the blood pressure lowering effect of trandolapril and increase the risk of kidney problems.
• Lithium: ACE inhibitors can increase lithium blood levels. Close monitoring is required.
• Diuretics: adding trandolapril to diuretic therapy increases the risk of a first dose blood pressure drop, particularly when volume depletion is present.
• Aliskiren: contraindicated in combination with trandolapril in patients with diabetes or significant kidney impairment.
• Antidiabetic medicines including insulin: ACE inhibitors may enhance the blood glucose lowering effect. Monitor blood glucose carefully when starting trandolapril.

Your prescriber will review all current medicines during the clinical assessment before any prescription is considered.

Trandolapril is a Prescription Only Medicine. The clinical consultation is the essential first step. A prescription will only be issued if a registered prescriber concludes, based on their individual assessment of your circumstances, that trandolapril is clinically appropriate for you.

During your online consultation with Pharmacy Planet, a registered prescriber will review the information you provide. This includes your diagnosis, blood pressure history, cardiac history, kidney function where available, current medicines, and other relevant medical information. The prescriber will assess which strength is appropriate, whether online prescribing is suitable for your indication, and whether your treatment is stable enough to be managed through this service.

If you are under the care of a cardiologist, heart failure specialist, or GP for any of the conditions trandolapril is prescribed to treat, please keep them informed of all medicines prescribed through online services. Coordinated care supports the safest approach to renin-angiotensin support and cardiovascular therapy.

Store below 30°C. Store in the original packaging to protect from moisture and light. Keep out of the sight and reach of children. Do not use after the expiry date printed on the packaging. Do not dispose of medicines via household waste or wastewater. Return unused or out of date capsules to your pharmacist for safe disposal. Full storage instructions are provided in the Patient Information Leaflet supplied with your medicine.

Pharmacy Planet is a GPhC-registered online pharmacy providing access to prescription medicines through a clinically led consultation process. Our registered prescribers and pharmacists are committed to patient safety, clinical accuracy, and responsible prescribing. We follow GPhC standards, MHRA guidance, and ASA advertising regulations in all aspects of our service. Every prescription is reviewed and dispensed by qualified healthcare professionals. We provide clear, factual information to help patients understand their antihypertensive medication and make informed decisions about their blood pressure control and cardiovascular therapy. If you have questions about trandolapril or any other medicine, our pharmacy team is available to help. We are committed to transparent, patient centred care.

References

1. Electronic Medicines Compendium (eMC). Trandolapril 0.5 mg, 1 mg, 2 mg and 4 mg capsules — Summary of Product Characteristics. https://www.medicines.org.uk/emc. Accessed May 2026.
2. National Institute for Health and Care Excellence (NICE). Hypertension in adults: diagnosis and management. NICE guideline NG136. https://www.nice.org.uk/guidance/ng136. Accessed May 2026.
3. National Institute for Health and Care Excellence (NICE). Chronic heart failure in adults: diagnosis and management. NICE guideline NG106. https://www.nice.org.uk/guidance/ng106. Accessed May 2026.
4. NHS. High blood pressure (hypertension). https://www.nhs.uk/conditions/high-blood-pressure-hypertension. Accessed May 2026.
5. Joint Formulary Committee. British National Formulary (BNF). Trandolapril. BMJ Group and Pharmaceutical Press. https://bnf.nice.org.uk. Accessed May 2026.
6. Medicines and Healthcare products Regulatory Agency (MHRA). Yellow Card — report a side effect. https://yellowcard.mhra.gov.uk. Accessed May 2026.

ACE Inhibitor Tablets and Capsules

The table below compares commonly prescribed ACE inhibitor tablets and capsules available at Pharmacy Planet. All are prescription-only medicines that act on the renin-angiotensin system to lower blood pressure.

Important: This comparison is for general information only and does not replace medical advice. A prescriber will decide which treatment is suitable for you following an online consultation.