What to Know Before You Start Alvesco

Every medication has side effects, and Alvesco (Ciclesonide) is no exception. The good news? Alvesco is actually one of the better-tolerated inhaled corticosteroids on the market, partly because of how it works — it's a prodrug that activates primarily in the lungs rather than the mouth and throat, which can mean fewer local side effects compared to some other inhalers.

That said, you should still know what to watch for. This guide covers the common side effects, the serious ones that need medical attention, and practical tips for minimizing problems.

What Is Alvesco?

Alvesco is the brand name for Ciclesonide, an inhaled corticosteroid (ICS) prescribed for the maintenance treatment of asthma in adults and children 12 years and older. It comes as a metered-dose inhaler in two strengths — 80 mcg and 160 mcg per actuation — and is taken twice daily. It's manufactured by Covis Pharma.

For a deeper look at what this medication does and how it works, see our guides on what is Alvesco and how Alvesco works.

Common Side Effects

These side effects are reported most frequently in clinical trials and are generally mild. They often improve as your body adjusts to the medication:

• Headache — the most commonly reported side effect
• Nasopharyngitis (common cold symptoms) — runny nose, sore throat, sneezing
• Sinusitis — sinus pressure and congestion
• Pharyngolaryngeal pain — sore throat or hoarseness
• Upper respiratory infection — cold or flu-like symptoms
• Arthralgia — joint pain
• Nasal congestion
• Pain in extremity — arm or leg discomfort
• Back pain

Most of these don't require medical attention unless they become severe or don't go away. If a common side effect is significantly affecting your daily life, talk to your doctor — they may adjust your dose or try a different approach.

Serious Side Effects

Serious side effects from Alvesco are less common but require prompt medical attention. Contact your doctor — or seek emergency care — if you experience any of the following:

Oropharyngeal Candidiasis (Oral Thrush)

This is a fungal infection in the mouth and throat that can develop with any inhaled corticosteroid. Symptoms include white patches on your tongue, inner cheeks, or throat, along with soreness and difficulty swallowing. Alvesco's prodrug design makes this less common than with some other ICS medications, but it can still happen — especially at higher doses.

Prevention tip: Rinse your mouth thoroughly with water and spit it out after every use. Don't swallow the rinse water.

Adrenal Suppression

Long-term use of inhaled corticosteroids can suppress your body's natural cortisol production. This is more of a concern at higher doses and with prolonged use. Symptoms of adrenal insufficiency include fatigue, weakness, dizziness, nausea, and low blood pressure. This is especially important to watch for if you're transitioning from oral corticosteroids to Alvesco.

Immunosuppression and Increased Infection Risk

Corticosteroids can reduce your immune system's ability to fight infections. If you have an existing tuberculosis, fungal, bacterial, viral, or parasitic infection, Alvesco may worsen it. Tell your doctor about any active infections before starting treatment.

Paradoxical Bronchospasm

In rare cases, inhaling Alvesco can cause sudden tightening of the airways — the opposite of what it's supposed to do. If you experience increased wheezing, coughing, or shortness of breath immediately after using your inhaler, stop using it and use your rescue inhaler. Contact your doctor right away.

Bone Mineral Density Reduction

Long-term use of inhaled corticosteroids may decrease bone density, increasing the risk of osteoporosis and fractures. This is a gradual effect and is more relevant for patients who use high doses over many years.

Glaucoma and Cataracts

Prolonged use of inhaled corticosteroids has been associated with an increased risk of glaucoma (increased eye pressure) and cataracts (clouding of the lens). Your doctor may recommend periodic eye exams if you use Alvesco long-term.

Growth Suppression in Children

Inhaled corticosteroids may slow growth in pediatric patients. Alvesco is approved for patients 12 years and older, and growth should be monitored regularly in adolescent patients.

Special Populations

Some groups need extra monitoring while using Alvesco:

• Patients switching from oral corticosteroids: Tapering off systemic steroids while starting Alvesco must be done gradually under medical supervision to avoid adrenal crisis
• Elderly patients: Generally start at the low end of the dosing range and monitor closely
• Pregnant or breastfeeding women: Alvesco has not been adequately studied in pregnancy or lactation — use only if the benefit clearly outweighs the risk
• Patients with active infections: Existing tuberculosis, fungal, bacterial, or viral infections may be worsened by corticosteroid use

How to Manage and Minimize Side Effects

Most Alvesco side effects can be reduced or prevented with a few simple steps:

Rinse Your Mouth After Every Use

This is the single most important thing you can do. Rinsing with water and spitting reduces your risk of oral thrush and throat irritation significantly.

Use the Correct Inhaler Technique

Poor inhaler technique means more medication deposits in your mouth and throat (where it causes side effects) instead of reaching your lungs (where it works). Ask your doctor or pharmacist to demonstrate proper MDI technique, or watch a tutorial from the manufacturer.

Don't Skip Doses — and Don't Double Up

Consistent daily use at your prescribed dose gives you the best asthma control with the lowest risk of side effects. Skipping doses can worsen asthma, and doubling up increases side effect risk without providing better control.

Keep Your Follow-Up Appointments

Your doctor may periodically check your lung function, bone density (for long-term users), eye health, and growth (for teens). These check-ups catch problems early.

Tell Your Doctor About All Your Medications

Drug interactions can increase Alvesco side effects. Strong CYP3A4 inhibitors like Ketoconazole can increase Ciclesonide levels in your body by approximately 3.6-fold, raising side effect risk. See our full guide on Alvesco drug interactions.

Final Thoughts

Alvesco is generally well-tolerated, and its prodrug design gives it an edge over some other inhaled corticosteroids when it comes to local side effects like oral thrush and hoarseness. The most common side effects — headache, cold symptoms, sinus issues — are typically mild and manageable.

The key is knowing what to watch for and communicating with your doctor. If you experience sudden breathing difficulty after using your inhaler, signs of oral thrush, or symptoms of adrenal suppression, don't wait — call your provider.

If you're new to Alvesco or considering it, our guide on finding a doctor who prescribes Alvesco can help you get started. And if cost is a concern, check out our Alvesco savings guide for programs that can bring the price down significantly.