Nintedanib (Nintedanib) — Patient-Friendly Guide (UK)

Nintedanib is a medicine used to treat certain progressive lung diseases. It belongs to a class of medicines known as tyrosine kinase inhibitors (TKIs). This guide explains what nintedanib does, how it works, how it’s used in everyday life, what to expect, and practical tips to help you take it more comfortably.

Information below is designed to be patient-friendly and UK-focused. Always follow the specific instructions provided with your medicine and discuss any questions with a qualified healthcare professional.

Basic product information

Strengths and exact dosing schedules can differ depending on the condition being treated and the specific product you have. Your healthcare team will advise the most appropriate regimen.

How nintedanib works (mechanism of action)

Nintedanib blocks several signalling pathways involved in fibrosis (scarring) and abnormal blood vessel growth. It inhibits tyrosine kinases including:

• VEGFR (vascular endothelial growth factor receptors)
• FGFR (fibroblast growth factor receptors)
• PDGFR (platelet-derived growth factor receptors)
• Other kinases that contribute to tissue remodelling and scarring

By targeting these pathways, nintedanib aims to slow disease progression in certain progressive fibrosing interstitial lung diseases (ILDs) and specific idiopathic lung conditions where fibrosis worsens over time.

Pharmacokinetics (how the body processes the medicine)

Understanding pharmacokinetics can help you take nintedanib more reliably. While individual results vary, key points typically include:

• Absorption: Nintedanib is absorbed after oral dosing. Levels in the bloodstream can vary between people.
• Food effects: Food can increase blood exposure of the drug (details in the “Food interactions” section).
• Distribution: The medicine distributes into tissues, including lung tissue where it exerts its effect.
• Metabolism: Primarily metabolised in the liver via enzymes (notably CYP3A4).
• Elimination: Excretion is mainly through faeces, with a smaller proportion eliminated through urine.

Because metabolism can be affected by other medicines, it’s important to tell your pharmacist or clinician about all medicines, including over-the-counter products and herbal supplements.

Typical use in the UK

Nintedanib is used to treat certain conditions where the lungs develop fibrosis and the disease tends to worsen over time. It is not a “cough syrup” or an instant symptom reliever; instead, it works by modifying processes that contribute to progression of fibrosis.

It may be considered for people with:

• Idiopathic pulmonary fibrosis (IPF)
• Other fibrosing interstitial lung diseases with a progressive phenotype (progression despite appropriate management)

A clinician will confirm the most appropriate indication based on your diagnosis, imaging, lung function, and clinical history.

Indications (what nintedanib is used for)

In the UK, nintedanib is used for the following main indications (subject to eligibility and local clinical criteria):

• Idiopathic pulmonary fibrosis (IPF), a chronic, progressive scarring lung disease
• Progressive fibrosing interstitial lung disease (PF-ILD): a group of ILDs that progress over time, leading to worsening lung scarring and function

If you’re unsure whether nintedanib is appropriate for your specific diagnosis, ask your specialist or pharmacist.

Timing and how to take nintedanib

Nintedanib is commonly taken as a twice-daily (every 12 hours) regimen. Exact timing should match the instructions you receive for your particular capsule strength.

• Choose consistent times each day to maintain steady exposure.
• Take with water; swallow capsules whole.
• Do not crush or open capsules unless your product instructions specifically allow it.
• Missed dose guidance: if you miss a dose, take it when you remember only if it’s not close to the next scheduled dose. If it’s nearly time for the next dose, skip the missed dose and continue as normal.

If side effects occur, your healthcare team may recommend dose modification. Do not change your dose without medical advice.

Food interactions (including what to eat and when)

Food can influence the amount of nintedanib absorbed. In many cases, taking nintedanib with food helps reduce variability.

Practical guidance commonly used:

• Take nintedanib with meals (or at least consistently with food as advised by your clinician/pharmacist).
• Try to keep meal timing consistent between doses.

If your healthcare provider gave specific dietary instructions, follow those. If you have swallowing difficulties or digestive concerns, speak to a pharmacist for tailored advice.

Alcohol interactions

Alcohol does not have a single universal “do not mix” rule with nintedanib, but alcohol can affect the liver and can worsen side effects such as nausea or diarrhoea.

• Because nintedanib is processed by the liver, heavy or frequent alcohol use may increase the risk of liver-related problems.
• Consider discussing your alcohol intake with your healthcare team, especially if you have known liver disease or abnormal liver blood tests.

As a general approach in UK practice, moderate alcohol may be possible for some people, but your clinician may advise limiting or avoiding alcohol depending on your test results and overall health.

Medicine interactions (including OTC and herbal products)

Nintedanib can interact with other medicines, especially those affecting liver enzymes. This can change nintedanib levels, increasing side effects or reducing effectiveness.

Medicines that may increase nintedanib exposure

• Strong inhibitors of CYP3A4 (examples may include some antifungals and certain antibiotics—your pharmacist can check specific products)
• Some medicines that affect transport proteins involved in drug movement

Medicines that may decrease nintedanib exposure

• Strong inducers of CYP3A4 (examples include certain anti-epileptic medicines and herbal products like St John’s wort)

Examples of commonly checked categories

• Antifungals
• Antibiotics (some classes)
• Anticonvulsants
• Medicines for HIV
• Herbal supplements (especially St John’s wort)
• Other cancer therapies and TKIs

Always tell your pharmacist about:

• All prescription medicines
• Any over-the-counter products (e.g., pain relief, cold remedies)
• Herbal products and supplements

Dosage (typical dosing information)

Dosing depends on the condition being treated and how well you tolerate the medicine. Common regimens in clinical practice are:

• Twice daily dosing (often every 12 hours)
• Dose may be reduced if side effects occur (for example, persistent diarrhoea or liver enzyme elevations)
• Treatment may be paused temporarily if serious side effects occur, then restarted at a modified dose if appropriate

Your exact dose should be confirmed on the label or in the paperwork supplied with your medicine. If you have kidney or liver problems, dosing and monitoring may need adjustment.

Safety profile: what to watch for

Like many targeted therapies, nintedanib can cause side effects. Some are common and manageable, while others require prompt medical attention.

Common side effects

• Diarrhoea (often the most common reason for dose adjustment)
• Nausea
• Vomiting
• Abdominal pain or indigestion
• Loss of appetite
• Fatigue
• Headache or dizziness (may occur in some people)

Liver-related effects

Nintedanib can raise liver enzymes. Your clinician may monitor liver blood tests during treatment.

• Signs to seek advice for include yellowing of the skin/eyes, dark urine, severe itching, unusual bruising or bleeding, or marked fatigue.

Bleeding and cardiovascular considerations

• Because nintedanib affects pathways involved in blood vessels, some people may have an increased risk of bleeding.
• If you take medicines that affect blood clotting or have a bleeding disorder, your clinician should review your situation carefully.

Serious or urgent symptoms

Seek urgent medical advice if you experience:

• Severe diarrhoea leading to dehydration (dizziness, fainting, very low urine output)
• Severe allergic-type reaction (swelling of face/lips, difficulty breathing)
• Signs of significant liver injury (yellow skin/eyes, severe abdominal pain, persistent vomiting)
• Vomiting blood, black/tarry stools, or coughing blood

Practical use tips to improve comfort

Many people can take nintedanib more comfortably by planning ahead—particularly for gastrointestinal side effects.

Managing diarrhoea

• Start early: if diarrhoea begins, contact your healthcare team promptly; early management can prevent complications.
• Hydrate: sip fluids regularly, especially if your stools become loose and frequent.
• Consider asking your pharmacist about anti-diarrhoeal medicines suitable for you. Do not self-start without checking, particularly if you have other conditions or medications.
• Eat bland foods during flare-ups (e.g., rice, toast, bananas) and avoid heavy, greasy, or spicy foods.

Reduce nausea and stomach upset

• Take with food as advised.
• Small, frequent meals may help.
• Avoid alcohol or very spicy foods if they worsen nausea.

Keep to the schedule

• Use a daily alarm or medication app.
• If you travel, plan how you’ll store and take your doses on time.

Monitoring and appointments

• Attend scheduled lung function checks, clinic reviews, and blood tests (particularly liver tests).
• Keep a simple symptom diary (e.g., number of bowel movements, appetite, fatigue) to help clinicians adjust treatment if needed.

What if side effects are difficult to manage?

If side effects become troublesome, do not stop treatment abruptly without medical advice. Clinicians can often:

• Recommend anti-diarrhoeal or anti-nausea support
• Adjust dosing (for example, a temporary break or dose reduction)
• Investigate other causes (such as infection, medication interactions, dehydration, or liver concerns)

The goal is to keep treatment safe and tolerable while maintaining the benefits for your lung condition.

Alternative options

Depending on your diagnosis and overall health, alternatives to nintedanib may include other antifibrotic or supportive approaches. Your specialist may consider one or more of the following:

• Antifibrotic medicines:
  • Nintedanib vs pirfenidone (choice depends on the specific condition, tolerance, and clinical factors)
• Supportive care: pulmonary rehabilitation, oxygen therapy if needed, vaccinations, symptom management
• Condition-specific treatments where fibrosis is linked to an underlying cause (for example, targeted therapies for certain ILDs)
• Clinical trials may be an option for some people

It’s important to discuss what “alternative” means for you—whether it’s another antifibrotic, a change in supportive care, or review of diagnosis and progression.

Market and legal context in the United Kingdom

In the UK, availability and prescribing practices for medicines such as nintedanib are governed by the relevant medicines regulations, clinical guidance, and local health pathways. Medicines are supplied through licensed channels and must be handled according to UK pharmacy standards.

For people living with progressive fibrosing lung disease, access commonly depends on:

• Your confirmed diagnosis and disease severity
• Whether progression criteria are met
• Clinical review and eligibility within commissioning frameworks
• Ongoing monitoring plans (including blood tests and symptom checks)

Your healthcare team can explain the rationale for choosing nintedanib and the monitoring schedule used in your care.

Recent guidance (general clinical themes)

While recommendations can evolve, recent UK-facing clinical practice generally emphasises:

• Early identification of progressive fibrosing ILD or IPF
• Regular monitoring for treatment tolerability, including liver function tests and side effect assessment
• Prompt management of diarrhoea to reduce the need for discontinuation
• Review of drug–drug interactions, particularly those affecting liver metabolism
• Individualised dosing and supportive care to improve adherence

If you want, you can ask your specialist or pharmacist which monitoring schedule applies to your treatment.

Delivery and availability (online pharmacy considerations in the UK)

Availability of nintedanib may vary by pharmacy supplier and product strength. When ordering online in the UK, expect steps that may include:

• Verification of the product requested and the correct strength/formulation
• Stock availability checks and estimated delivery times
• Packaging designed to protect medicines during transit
• Secure delivery options to help protect your privacy and reduce missed deliveries

Delivery times depend on the courier service, local address, and whether the item is in stock. If stock is temporarily unavailable, some pharmacies offer alternative arrangements or a future dispatch date.

Always check the expiry date on the outer packaging and store the capsules as instructed in the patient information leaflet.

Storage and handling

Store nintedanib according to the instructions provided with your medicine. In general:

• Keep out of the sight and reach of children
• Protect from moisture and excessive heat
• Keep capsules in their original container until use

If you have questions about storage at home, ask your pharmacist.

FAQ about nintedanib

1) What is nintedanib used for?

Nintedanib is used to treat certain progressive fibrosing lung diseases, including idiopathic pulmonary fibrosis (IPF) and some progressive fibrosing interstitial lung diseases (PF-ILD), where the condition worsens over time.

2) How long does it take to work?

Nintedanib is intended to slow disease progression rather than provide immediate symptom relief. Some benefits may be assessed over months through lung function tests and clinical reviews.

3) How should I take nintedanib—morning or evening?

Most regimens are taken twice daily at set times. Choose times that fit your routine so you can take doses about 12 hours apart, with food as advised.

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

If you miss a dose, take it when you remember only if it’s not close to the next dose. If it is close, skip the missed dose and continue your usual schedule. If you’re unsure, ask your pharmacist or clinician.

5) Can I take nintedanib with food?

Food can affect how much nintedanib your body absorbs. Many patients are advised to take it with meals or consistently with food. Follow your specific instructions for your product.

6) Is diarrhoea normal?

Diarrhoea is one of the most common side effects. It can often be managed with early treatment, hydration, and dietary adjustments. If diarrhoea is severe, persistent, or causes dehydration, contact your healthcare team promptly.

7) Will I need blood tests?

Your clinician may monitor liver function and other safety checks during treatment. This helps detect side effects early and supports safe dosing.

8) Does nintedanib interact with other medicines?

Yes. Some medicines—especially those affecting liver enzymes and transport proteins—can increase or decrease nintedanib levels. Tell your pharmacist about all medicines and supplements you take.

9) Can I drink alcohol while taking nintedanib?

Moderate alcohol may be possible for some people, but because nintedanib can affect the liver and may worsen gastrointestinal side effects, it’s wise to discuss your alcohol intake with your healthcare team—particularly if you have abnormal liver tests or liver disease.

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

Depending on your diagnosis and circumstances, clinicians may consider alternatives such as another antifibrotic medicine, supportive care adjustments, or other condition-specific treatments. Dose changes and side effect management are also often considered before switching.

Need help choosing the right approach?

If you’re preparing to start or continue nintedanib, a pharmacist can help you review:

• Your current medicines for possible interactions
• How to manage likely side effects, especially diarrhoea
• How to take capsules correctly with timing and food
• What monitoring schedule to expect

Always contact a healthcare professional if you have new or worsening symptoms, or if you’re unsure whether something is related to your treatment.