Nintedanib (UK) – Patient-Friendly Guide

Nintedanib is an oral medicine used to treat certain progressive lung diseases. If you have been prescribed nintedanib as part of your care, this page explains what it does, how it works in the body, what to expect from treatment, and practical information to help you use it safely.

This guide is written for patients and carers in the United Kingdom. It does not replace advice from your specialist team or pharmacist. Always follow the instructions given to you for your personal situation.

Quick Facts

• Medicine: Nintedanib
• How it’s taken: By mouth (usually capsules)
• Common side effects: Diarrhoea, nausea, vomiting, liver enzyme changes
• Key monitoring: Liver blood tests (and sometimes blood counts) during treatment
• Important precautions: Tell your healthcare team about liver problems, bleeding risk, and drug interactions

Basic Product Information

How Nintedanib Works (Mechanism of Action)

Nintedanib belongs to a group of medicines called tyrosine kinase inhibitors. In simple terms, it helps block signals inside cells that promote inflammation and scarring (“fibrosis”) in certain lung conditions.

Nintedanib works by inhibiting several receptors involved in the processes that lead to fibrotic lung damage, including (commonly described) pathways such as:

• VEGFR (vascular endothelial growth factor receptors)
• FGFR (fibroblast growth factor receptors)
• PDGFR (platelet-derived growth factor receptors)
• Other related signalling pathways that contribute to tissue remodelling

The goal is to slow the progression of lung fibrosis in appropriate conditions. It does not reverse existing scarring, but it can help reduce further decline over time.

Pharmacokinetics (How the Body Handles the Medicine)

Pharmacokinetics describes what happens to a medicine after you take it—how quickly it starts working, how much of it reaches the bloodstream, how it’s processed by the body, and how it’s removed.

• Absorption: Nintedanib is absorbed after oral dosing. The amount reaching the bloodstream can be influenced by food and individual factors.
• Distribution: It distributes into tissues; protein binding is considered relevant for its behaviour in the body.
• Metabolism: The liver is an important site of metabolism, with enzymes involved (commonly CYP3A4 pathways are discussed). Liver function therefore affects handling of the medicine.
• Excretion: The medicine and its metabolites are eliminated primarily via the bile/faecal route, with only a smaller fraction removed through the kidneys.
• Half-life (conceptually): The medicine is typically dosed more than once per day to maintain therapeutic levels.

Because metabolism relates to the liver, your clinician may check liver blood tests regularly, especially during the first months of treatment.

What Nintedanib Is Used For (Indications)

In the UK, nintedanib is used for specific fibrosing lung diseases, typically those with a progressive pattern.

Indications can change over time as medicines are reviewed by regulators and guidelines are updated. In practice, nintedanib may be considered for patients with:

• Idiopathic pulmonary fibrosis (IPF)
• Other progressive fibrosing interstitial lung diseases (progressive ILD) where fibrosis progresses despite standard management
• Conditions where disease progression is clinically established (based on specialist assessment and eligibility criteria)

Your respiratory specialist will decide whether nintedanib is appropriate for your diagnosis, risk profile, and overall treatment plan.

Typical Dosing and Timing

Dosing depends on the specific formulation and your personal tolerance. Your prescriber may adjust the dose to manage side effects.

Typical adult dosing (commonly used):

• 150 mg twice daily (i.e., two doses per day about 12 hours apart) is a commonly referenced regimen.

How to take it:

• Take the capsules at the same times each day.
• Swallow whole with water.
• Do not crush or open capsules unless your pharmacist/pharmacy instructions specifically say it is appropriate for your product.

Timing with meals:

• Many people take doses with or after food to help reduce stomach irritation.
• It’s important to follow the specific product directions provided for your brand and local dispensing instructions.
• Try to keep food timing consistent from day to day.

If you miss a dose: Do not take a double dose to make up for a missed one. Instead, take your next dose at the usual time and contact your pharmacy or clinician if you are unsure.

Food Interactions and What to Eat

Food can affect how much nintedanib your body absorbs. For that reason, consistent intake is helpful.

• Eat regularly: If you experience nausea or stomach upset, taking nintedanib with food may help.
• Consistency matters: Try not to make large changes to meal timing around doses.
• Grapefruit and certain foods: Avoid grapefruit and grapefruit juice unless your pharmacist confirms it’s safe for your specific situation, as some fruits can affect drug-metabolising enzymes.

If you have a dietician or nutrition plan for your lung condition, aim to follow that plan while keeping your dosing routine stable.

Alcohol and Medicine Interactions

Alcohol

Alcohol can irritate the stomach and may also affect liver function. Because nintedanib is associated with liver enzyme elevations in some people, it’s generally sensible to:

• Limit alcohol during treatment
• Tell your clinician if you drink regularly or heavily
• Report symptoms suggesting liver issues (e.g., yellowing of skin/eyes, dark urine, severe fatigue)

Your healthcare team can advise what “safe” drinking means for you based on your liver blood tests and overall health.

Medicine Interactions (Very Important)

Nintedanib can interact with other medicines, particularly those that influence enzymes involved in drug metabolism and transport. Always provide your pharmacist with a full list of:

• All medicines on prescription
• Over-the-counter medicines (including cold/flu preparations)
• Herbal products and supplements

Examples of interaction risk categories include:

• Strong enzyme inducers (medicines that speed up metabolism) may reduce nintedanib levels and reduce effectiveness.
• Strong enzyme inhibitors may raise nintedanib levels and increase side effects risk.
• Medicines affecting bleeding risk may require extra caution, as nintedanib can affect pathways involved in blood vessel repair and bleeding in some patients.
• Anti-epileptics, some antibiotics, antifungals, and HIV medicines can be relevant—your pharmacist will check specific products.

Because interaction patterns depend on exact medicines and doses, never start or stop a medicine or supplement without checking first.

Safety Profile: Common and Important Side Effects

Most people experience some side effects, but many are manageable with dose adjustments and supportive care. Your clinic will monitor you and can advise on treatment modifications if needed.

Common side effects

• Diarrhoea (very common). This is often the main dose-limiting side effect.
• Nausea
• Vomiting
• Decreased appetite
• Abdominal pain or indigestion
• Fatigue
• Headache (may occur)
• Elevated liver enzymes found on blood tests

Less common but important side effects

• Bleeding (report unusual bruising, coughing blood, black/tarry stools, or prolonged bleeding)
• High blood pressure (may require monitoring)
• Kidney issues (uncommon; usually identified through blood/urine tests)
• Interstitial lung disease worsening is a key clinical consideration in the underlying condition—seek help if breathing suddenly worsens
• Serious liver problems (rare but potentially serious)

Seek urgent medical advice if

• Severe or persistent diarrhoea (e.g., signs of dehydration such as dizziness, very dry mouth, reduced urine)
• Signs of liver injury: yellow skin/eyes, severe right-upper abdominal pain, dark urine, severe unexplained fatigue
• Signs of bleeding: vomiting blood, blood in stools/urine, or unexpected severe bruising
• Severe allergic reaction symptoms (e.g., swelling of face/lips, difficulty breathing)

Practical Use Tips (Day-to-Day Living)

Managing diarrhoea (key practical advice)

Diarrhoea can occur early in treatment. It’s important to start managing it promptly.

• Hydrate: Drink fluids regularly, especially if stools become loose.
• Consider early medication: Many patients are advised about anti-diarrhoeal options—ask your pharmacist what is suitable for you.
• Monitor severity: Tell your clinic if diarrhoea is frequent, watery, or not improving.
• Don’t “wait it out”: In severe cases, dose interruption or reduction may be needed under medical guidance.

Reducing stomach upset

• Take your dose with or after food if you get nausea.
• Eat smaller meals if large meals worsen symptoms.
• Avoid very spicy or greasy foods if they trigger discomfort.

Stay on top of monitoring

• Attend scheduled appointments for liver blood tests.
• Keep track of side effects so your team can adjust dosing if needed.
• Report new symptoms promptly, even if you think they might be unrelated.

Adherence and routine

• Use a daily routine—pill organiser, alarms, or smartphone reminders.
• If you travel, plan ahead for how you’ll store and carry your medicine.

Guidance on Dose Changes and Missed Doses

The goal of dose adjustment is to balance effectiveness with tolerability. Your clinician may reduce the dose or pause treatment temporarily if side effects are significant (for example, persistent diarrhoea or elevated liver enzymes).

• Do not change the dose yourself without discussing with your healthcare team.
• If you miss a dose, follow the advice given on your medicine label or by your pharmacist.

Alternative Options

Treatment options for progressive fibrosing lung disease depend on the specific diagnosis, disease severity, and individual risk factors. Depending on your condition, specialists may consider:

• Other antifibrotic medicines (e.g., medicines within the same therapeutic area may be used in eligible patients)
• Supportive care (e.g., pulmonary rehabilitation, symptom management, oxygen therapy when required)
• Treating underlying or contributing causes (for example, stopping certain triggers, managing reflux, and treating infections when appropriate)
• Multidisciplinary care with respiratory specialists, pharmacists, nurses, and dieticians

Your team will discuss the best approach for your situation, including the potential benefits and side effects of each option.

UK Market and Legal/Regulatory Context

In the United Kingdom, medicines are authorised by the relevant regulatory authority and are supplied through NHS and private healthcare pathways depending on clinical circumstances. Access to nintedanib may involve:

• Specialist assessment by respiratory teams to confirm diagnosis and eligibility for treatment
• Funding and prescribing policies that may vary by NHS region and patient criteria
• Post-authorisation monitoring (pharmacovigilance) for safety

Guidance on antifibrotic therapy and progressive ILD management is updated periodically by clinical bodies and professional societies. Your clinician may use this to guide decisions about whether and when nintedanib is started or continued.

Recent Guidance (How Care Practices Are Shaped)

Ongoing updates in respiratory care commonly emphasise:

• Early identification of progressive fibrosing interstitial lung disease
• Regular monitoring of lung function and symptoms
• Active management of common side effects (especially diarrhoea) and liver monitoring
• Individualised dosing where dose interruptions or reductions may be needed for tolerability

Because guidance evolves, your respiratory team will follow the latest recommendations available in the UK at the time of your care.

Delivery and Availability in the UK

Availability can vary by supplier and product strength. Most online pharmacies will only supply medicines through established supply routes that comply with UK regulations and data requirements.

• Stock status: Some strengths may be temporarily unavailable; your pharmacy may offer alternatives or waiting options.
• Delivery times: Delivery depends on the dispensing pathway and local courier services. Check the checkout page or your order confirmation for estimated delivery.
• Cold chain: Nintedanib is typically not a cold-chain item; however, always follow the storage instructions on the label.
• Packaging: Medicines are supplied in protective packaging with patient instructions and batch/expiry details.

If you need repeat supplies, allow extra time for processing and delivery so you do not run out.

FAQ

1) How long does it take for nintedanib to work?

Nintedanib helps slow disease progression rather than giving immediate symptom relief. Some patients notice stabilisation over weeks to months, while lung function trends and symptoms are assessed over time. Your specialist will monitor your progress with clinical reviews and lung tests.

2) What should I do if I get diarrhoea?

Start supportive measures right away (especially hydration) and contact your pharmacy or clinic for advice. Early treatment can prevent the need for dose interruptions. If diarrhoea is severe, persistent, or you develop dehydration, seek urgent medical advice.

3) Can I take nintedanib with food?

Many people tolerate nintedanib better when taken with food. Food can influence absorption, so it’s helpful to take your doses consistently at a similar time relative to meals. Follow the exact instructions from your dispensed pack and your pharmacist.

4) Are there foods I must avoid?

Grapefruit and grapefruit juice may increase levels of some medicines and may not be recommended. Your pharmacist can advise on specific dietary items relevant to nintedanib and your other medicines.

5) Is it safe to drink alcohol while taking nintedanib?

Alcohol may increase strain on the liver and worsen stomach upset. It’s generally recommended to limit alcohol and discuss your pattern of drinking with your healthcare team, particularly if you have abnormal liver blood tests.

6) What blood tests will I need?

Liver function tests (such as ALT/AST and other related measures) are commonly monitored. The frequency is based on your risk and response. Sometimes other blood tests are used to monitor overall safety.

7) What medicines should I tell my pharmacist about?

Tell them about all medicines and supplements, including:

• Cold/flu remedies
• Antibiotics or antifungals
• Epilepsy medicines
• Herbal products and high-dose supplements
• Medicines that affect bleeding (e.g., antiplatelet or anticoagulant therapies)

8) Can I stop nintedanib if I feel better?

Don’t stop treatment without speaking to your specialist. Stopping may allow disease progression to resume. If side effects become difficult to manage, your clinician can often adjust dosing or consider other options.

9) What should I do if I miss a dose?

Take your next dose at the usual time. Do not take a double dose. If you’re unsure what to do, ask your pharmacist for guidance.

10) Are there alternatives if I can’t tolerate nintedanib?

Alternatives depend on your diagnosis and clinical criteria. Your specialist may consider other antifibrotic options or different management strategies. The best choice balances benefit and side effect risk.

Important Reminder

Nintedanib is a targeted medicine for progressive fibrosing lung disease and requires careful monitoring. If you notice worsening breathing, severe diarrhoea, signs of bleeding, or symptoms that may indicate liver problems, contact a healthcare professional promptly.

For personalised advice, always refer to your own care plan and the instructions provided with your medicine.