Pulmicort Side Effects: Complete Safety Guide
When Do Side Effects Start? How Long Do They Last? Timeline, Contraindications & Food Interactions
Key Takeaways: Pulmicort Side Effects
- Common side effects: Oral thrush, sore throat, hoarse voice, cough – usually mild and preventable by rinsing mouth after use.
- Onset: Local effects can appear within days; systemic effects (e.g., adrenal suppression) may take weeks to months of high-dose use.
- Duration: Most side effects resolve within days of stopping; systemic effects may persist longer.
- Contraindications: Hypersensitivity to budesonide; active untreated lung infections.
- Food interactions: None known, but always rinse mouth after inhalation to reduce oral side effects.
Pulmicort (budesonide) is a well‑tolerated asthma preventer, but like all medicines, it can cause side effects. Understanding what to expect, when they might occur, and how to manage them helps you use your treatment safely and confidently.
When to Seek Immediate Medical Help
Stop using Pulmicort and contact a doctor immediately if you experience: swelling of the face, lips, tongue, or throat; rash, itching, hives; wheezing or difficulty breathing shortly after inhalation (possible allergic reaction).
What are Pulmicort Side Effects?
Side effects are listed by frequency according to clinical trials and post‑marketing data from the Patient Information Leaflet.
Common (affect up to 1 in 10 people)
- Oral thrush (fungal infection in the mouth) – less likely if you rinse your mouth after use.
- Mild sore throat, coughing, hoarse voice – often temporary.
- Pneumonia in patients with COPD (not asthma).
Uncommon (affect up to 1 in 100 people)
- Feeling worried, restless, nervous
- Depression
- Trembling and shaking
- Cataract (clouding of the lens)
- Muscle cramps
- Blurred vision
Rare (affect up to 1 in 1,000 people)
- Sleeping problems, feeling over‑excited or irritable (more common in children)
- Bruising of the skin
- Loss of voice
- Hoarse voice in children
- Growth suppression in children and adolescents (with high doses over several years)
- Adrenal gland suppression (fatigue, weight loss, low blood pressure)
- Glaucoma (increased eye pressure)
- Changes in bone mineral density (thinning of bones) with long‑term high doses
Allergic reactions (very rare, affect less than 1 in 10,000)
- Swelling of face, lips, tongue, eyes, ears
- Rash, itching, contact dermatitis, hives
- Sudden wheezing after inhalation
🗒️ Note: The risk of systemic effects (adrenal, growth, bone) is much lower with inhaled corticosteroids than with tablets. Your doctor will prescribe the lowest effective dose.
When Do Pulmicort Side Effects Start?
The onset of side effects varies depending on the type:
- Local (mouth/throat) effects: Thrush, sore throat, hoarseness can appear within the first few days to weeks of treatment, especially if the mouth is not rinsed after inhalation.
- Immediate allergic reactions: Occur within minutes to hours after a dose – very rare.
- Systemic effects: Adrenal suppression, growth slowing, bone density changes take months to years of regular high‑dose use to become noticeable.
- Psychological effects: Anxiety, depression, sleep problems – may emerge after weeks of treatment.
Most people do not experience systemic effects because the dose is low and targeted to the lungs.
How Long Do Pulmicort Side Effects Last?
- Local effects: Thrush usually resolves with antifungal treatment and improved mouth rinsing. Hoarseness and sore throat often disappear within days of continuing use, especially if you rinse your mouth.
- Allergic reactions: Symptoms reverse rapidly after stopping the drug and with appropriate treatment.
- Systemic effects: Adrenal function recovers over weeks to months after stopping high‑dose therapy. Growth suppression may be partially reversible if caught early. Bone density loss may take longer to improve.
- Psychological effects: Usually resolve within a few weeks of dose adjustment or discontinuation.
If you experience persistent side effects, consult your doctor; they may adjust your dose or suggest strategies to minimise them.
Side Effects Timeline
| Timeframe | Possible Side Effects |
|---|---|
| Immediate (minutes to hours) | Allergic reactions (very rare), mild throat irritation |
| Days to weeks | Oral thrush, hoarseness, cough |
| Weeks to months | Anxiety, depression, tremor, cataracts, blurred vision |
| Months to years (high doses) | Adrenal suppression, growth slowing (children), reduced bone density, glaucoma |
Note: Most patients on standard doses never experience systemic effects. Regular review with your doctor ensures early detection.
Contraindications: Who Should Not Use Pulmicort?
Do not use Pulmicort if:
- You are allergic to budesonide (or any of the ingredients – Pulmicort Turbohaler contains no excipients).
- You have an untreated lung infection (including tuberculosis, fungal, or viral infections).
Consult your doctor before using if:
- You have liver problems (may require dose adjustment).
- You have a history of tuberculosis (TB).
- You have any infection in the lungs.
- You are pregnant, planning pregnancy, or breastfeeding.
- You have recently used oral corticosteroids or high doses of inhaled steroids.
- You experience blurred vision or other visual disturbances.
Food Interactions with Pulmicort
There are no known interactions between Pulmicort and food. However, to minimise the risk of oral thrush and hoarseness, it is essential to rinse your mouth with water after each use and spit it out – do not swallow.
Grapefruit juice may theoretically increase budesonide levels by inhibiting CYP3A4, but this interaction is not clinically significant with inhaled budesonide. Nevertheless, if you consume large amounts of grapefruit juice regularly, mention it to your doctor.
Always follow your doctor’s advice regarding diet while using any medication.
Pulmicort Side Effects FAQs
Can Pulmicort cause weight gain?
Weight gain is not a common side effect of inhaled budesonide. High doses over long periods could theoretically affect adrenal function, but this is rare.
Will Pulmicort affect my voice permanently?
Hoarseness or loss of voice is usually temporary and resolves with rinsing the mouth after use. If it persists, consult your doctor.
What should I do if I get oral thrush from Pulmicort?
Contact your doctor or pharmacist. They may prescribe antifungal treatment and remind you to rinse your mouth after every dose.
Is it safe to take Pulmicort if I have high blood pressure?
Yes, Pulmicort is not known to affect blood pressure. However, always inform your doctor about all your medical conditions.
Can I drink alcohol while using Pulmicort?
There is no known interaction between alcohol and budesonide. Moderate alcohol consumption is unlikely to cause problems, but always follow your doctor’s advice.
Need Pulmicort or Asthma Support?
If you have asthma and think Pulmicort may be appropriate, our UK‑registered doctors can provide an online consultation and prescription if suitable.
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Medical Content Manager
Nabeel is a co-founder, and medical content manager of Chemist Doctor. He works closely with our medical team to ensure the information is accurate and up-to-date.
Medical Doctor
Dr. Feroz is a GMC-registered doctor and a medical reviewer at Chemist Doctor. He oversees acute condition and urgent care guidance.
Medical Director
Usman is a co-founder, and medical director of Chemist Doctor. He leads the organisation's strategic vision, bridging clinical and operational priorities.
Review Date: 08 March 2026
Next Review: 08 September 2026
Published on: 08 March 2026
Last Updated: 08 March 2026