Fluticasone Side Effects: What You Should Know

Fluticasone is one of the most widely used corticosteroids in the United States, prescribed in inhaled, nasal, and topical forms for conditions ranging from asthma to allergies to eczema. Like all medications, it comes with potential side effects — most of them mild, but some worth paying close attention to.

This guide breaks down the common and serious side effects of Fluticasone based on FDA labeling, explains who's most at risk, and tells you exactly when to call your doctor.

What Is Fluticasone? (Quick Overview)

Fluticasone is a synthetic corticosteroid available in several forms:

• Inhaled — for asthma and COPD (brand names include Arnuity Ellipta, ArmonAir, and the authorized generic replacing Flovent HFA)
• Nasal spray — for allergic rhinitis, nasal polyps, and sinusitis (Flonase, Xhance)
• Topical cream/ointment — for eczema and dermatitis (Cutivate)
• Combination inhalers — Fluticasone combined with long-acting bronchodilators (Advair, Breo Ellipta)

The side effects you experience depend largely on which form you use and how long you use it. For a deeper look at the medication, see our guide on what Fluticasone is and how it works.

Common Side Effects

These side effects are reported frequently and are usually mild. They don't necessarily mean you should stop taking Fluticasone, but you should mention them to your doctor if they persist or become bothersome.

Inhaled Fluticasone (Inhalers)

• Oral thrush (candidiasis) — A fungal infection in the mouth and throat. This is the most well-known side effect of inhaled corticosteroids. It appears as white patches on your tongue, inner cheeks, or throat.
• Hoarseness or voice changes (dysphonia) — The medication can irritate your vocal cords, making your voice raspy or weak.
• Sore throat (pharyngitis) — General throat irritation, especially if you're not rinsing your mouth after each use.
• Cough — Some people experience coughing right after inhaling the medication.
• Headache — Reported in clinical trials, though it's difficult to separate from symptoms of the underlying condition.
• Upper respiratory infection — Cold-like symptoms including runny nose, congestion, or sneezing.

Nasal Spray Fluticasone

• Nosebleeds (epistaxis) — The most common complaint with nasal Fluticasone. Usually minor spotting, not heavy bleeding.
• Nasal irritation or dryness — A burning or stinging sensation inside the nose.
• Headache — Common across most nasal corticosteroid studies.
• Sore throat — Some of the spray can drip down the back of the throat.

Topical Fluticasone (Cream/Ointment)

• Skin thinning — With prolonged use, the skin in the treated area can become thinner and more fragile.
• Burning or stinging — At the application site, especially in the first few days.
• Easy bruising — Related to skin thinning.
• Stretch marks (striae) — With extended use on large areas or skin folds.

Serious Side Effects

These are less common but can be significant. Contact your doctor promptly if you experience any of the following:

• Adrenal suppression — Long-term or high-dose Fluticasone can suppress your body's ability to produce its own cortisol. Symptoms include extreme fatigue, weakness, dizziness, nausea, and low blood pressure. This is especially concerning if you suddenly stop the medication without tapering.
• Growth suppression in children — Inhaled corticosteroids can slow growth velocity in children. The effect is usually small (about 1 cm in the first year), but doctors should monitor height regularly.
• Bone density loss (osteoporosis) — Long-term inhaled corticosteroid use is associated with decreased bone mineral density, increasing fracture risk. This is more relevant for adults on higher doses for years.
• Glaucoma and cataracts — Long-term use of any corticosteroid can increase eye pressure (leading to glaucoma) and cloud the lens of the eye (cataracts). Report any vision changes to your doctor.
• Increased infection risk — Corticosteroids suppress local and sometimes systemic immune function. You may be more susceptible to infections, and existing infections can worsen.
• Cushing syndrome — Rare, but can occur with high systemic exposure, especially if Fluticasone is combined with strong CYP3A4 inhibitors like Ritonavir. Symptoms include weight gain in the face and midsection, easy bruising, and muscle weakness.
• Paradoxical bronchospasm — In rare cases, inhaled Fluticasone can trigger sudden tightening of the airways instead of opening them. If you experience wheezing or difficulty breathing right after using your inhaler, stop use and seek medical attention.
• Pneumonia — Studies have shown an increased risk of pneumonia in COPD patients using inhaled corticosteroids, including Fluticasone-containing products.
• Severe allergic reaction (anaphylaxis) — Very rare, but possible. Symptoms include swelling of the face, lips, tongue, or throat, difficulty breathing, and hives. Call 911 immediately.

Side Effects in Specific Populations

Children

The biggest concerns with Fluticasone in children are growth suppression and adrenal suppression. Doctors should use the lowest effective dose and monitor growth at every visit. Parents should watch for signs of adrenal insufficiency like unusual fatigue or weakness.

Pregnant Women

Fluticasone is classified as pregnancy category C. It should only be used during pregnancy if the benefits clearly outweigh the risks. Poorly controlled asthma during pregnancy also carries significant risks, so don't stop your inhaler without talking to your doctor.

Older Adults

Elderly patients on long-term inhaled Fluticasone should be monitored for osteoporosis and cataracts. A bone density scan (DEXA) may be recommended for those on higher doses for extended periods.

People Taking CYP3A4 Inhibitors

If you take medications like Ritonavir, Ketoconazole, Itraconazole, or Clarithromycin, your body may not clear Fluticasone as quickly. This increases systemic exposure and the risk of adrenal suppression and Cushing syndrome. Make sure your doctor knows about all your medications. For a full list, see our Fluticasone drug interactions guide.

How to Manage Common Side Effects

Many Fluticasone side effects can be reduced or prevented with simple steps:

Preventing Oral Thrush (Inhaled)

• Rinse your mouth with water after every use — swish and spit, don't swallow
• Use a spacer device with your metered-dose inhaler to reduce medication deposit in the mouth
• If thrush develops, your doctor can prescribe an antifungal rinse like Nystatin

Reducing Hoarseness

• Rinse and gargle after each use
• Use a spacer if applicable
• Talk to your doctor about switching to a dry powder inhaler (like Arnuity Ellipta), which some patients tolerate better

Managing Nosebleeds (Nasal Spray)

• Aim the spray away from the nasal septum (the wall between your nostrils)
• Use a saline nasal spray before Fluticasone to moisturize the nasal passages
• If nosebleeds are frequent, take a break from use and contact your doctor

Preventing Skin Thinning (Topical)

• Use the lowest strength that controls your symptoms
• Don't apply to the face or skin folds for extended periods unless directed
• Take breaks from use as your doctor recommends

Final Thoughts

Most people who use Fluticasone experience few or no side effects, especially at standard doses for short to moderate durations. The key is using it correctly — proper inhaler technique, rinsing your mouth, aiming nasal sprays away from the septum — and communicating with your doctor about anything that feels off.

If you're worried about side effects, don't stop your medication on your own. Talk to your doctor first. Uncontrolled asthma or allergies can be more dangerous than the side effects of properly used Fluticasone.

Looking for more information? Read about how Fluticasone works or explore alternatives to Fluticasone if side effects are a concern for you.