Breztri Aerosphere Side Effects: What to Expect and When to Call Your Doctor

Breztri Aerosphere (budesonide/glycopyrrolate/formoterol fumarate) is a powerful triple-combination inhaler that helps manage COPD and asthma symptoms — but like all medications, it can cause side effects. Understanding what's normal, what to watch for, and when to call your doctor is an important part of using Breztri safely. This guide covers both common and serious side effects, plus practical tips to minimize risks.

How Breztri's Three Ingredients Each Contribute to Side Effects

Breztri contains three different active ingredients, each of which can cause its own side effects:

Budesonide (ICS): Can cause oral thrush, increased infection risk, reduced bone mineral density, and adrenal suppression with long-term use.

Glycopyrrolate (LAMA): Anticholinergic effects may cause dry mouth, urinary retention, constipation, and blurred vision or worsening of narrow-angle glaucoma.

Formoterol fumarate (LABA): Beta2-adrenergic stimulation can cause tremor, palpitations, increased heart rate, elevated blood pressure, and rarely serious arrhythmias.

Common Side Effects of Breztri Aerosphere

These side effects occur in a significant number of patients and are generally manageable:

Upper respiratory tract infections (URTIs) / Nasopharyngitis: The most commonly reported side effect. Symptoms resemble a common cold — runny nose, sore throat, cough. Report persistent or worsening symptoms to your doctor.

Oral thrush (oropharyngeal candidiasis): A fungal infection in the mouth and throat caused by inhaled budesonide. Symptoms include white patches in the mouth, a sore or burning feeling, or difficulty swallowing. Prevention: rinse your mouth with water and spit (do not swallow) after every use of Breztri.

Back pain: Reported in clinical trials. Usually mild. Inform your doctor if it is new or worsening.

Hypertension (high blood pressure): Formoterol can increase blood pressure. Your doctor may want to monitor your BP, especially in the first weeks of treatment.

Tremor or shakiness: Usually mild and tends to improve over time as your body adjusts to formoterol.

Headache: More common in the first few weeks of treatment.

Serious Side Effects — Call Your Doctor or Seek Emergency Care

These side effects are less common but require prompt medical attention:

Pneumonia: Patients with COPD are already at higher risk for pneumonia, and the ICS component of Breztri may further increase this risk. Call your doctor immediately if you develop fever, chills, increased sputum production, increased cough, or worsening breathing.

Paradoxical bronchospasm: Wheezing or chest tightness immediately after inhaling Breztri. This is a potentially life-threatening reaction. Stop using Breztri immediately and call your doctor or go to an emergency room.

Cardiovascular effects: Formoterol can cause a fast or irregular heartbeat (arrhythmia), chest pain, or a significant rise in blood pressure. Seek emergency care immediately if you experience chest pain, a racing or irregular heartbeat, or feel faint.

Urinary retention: Glycopyrrolate (anticholinergic) can worsen urinary symptoms, especially in men with prostate enlargement. If you experience pain or difficulty urinating, stop Breztri and contact your doctor.

Eye problems (glaucoma, cataracts): Long-term use of inhaled corticosteroids and anticholinergics may increase the risk of glaucoma or cataracts. Report new or worsening vision problems or eye pain to your doctor.

Allergic reactions / Anaphylaxis: Rare but serious. Symptoms include hives, swelling of the face, lips, tongue, or throat, and difficulty breathing. Call 911 immediately.

Decreased bone mineral density: With long-term ICS use, bone density can decline, increasing fracture risk. Your doctor may order a bone density scan (DEXA scan) if you're on Breztri long-term.

Tips to Minimize Breztri Side Effects

Always rinse your mouth and spit after each dose — this is the most important step to prevent oral thrush.

Use Breztri exactly as prescribed — 2 puffs twice daily. Do not use more than prescribed.

Report any new symptoms to your doctor promptly — do not assume a new symptom is unrelated to your inhaler.

Attend regular follow-up appointments — your doctor may monitor blood pressure, eye health, and bone density over time.

Side effects can sometimes be confused with drug interactions. For a full guide on what medications to avoid while taking Breztri, read our article on Breztri drug interactions.

If you're having trouble accessing Breztri at your pharmacy, medfinder can help you find a pharmacy with it in stock near you.