Qnasl is a prescription nasal spray for allergy symptoms associated with seasonal and chronic allergies. The aerosol nasal spray is used to treat several symptoms, including but not limited to runny nose, cough, congestion, sneezing, and watery, itchy eyes. Doctors typically prescribe Qnasl for daily use, although you can take it as needed when symptoms arise. Qnasl is not approved for children under the age of four. Children between the ages of 4 and 11 are prescribed a lower dose than adolescents and adults aged 12 and older.

How Does Qnasl Work?

Beclomethasone, the main ingredient in Qnasl, is a corticosteroid, commonly referred to as steroids. Steroids reduce inflammation, and clear nasal passages so patients can breathe easier.

Before inhaling Qnasl Nasal Aerosol, blow your nose. The nasal actuator administers the intranasal spray from a canister. When finished using the inhaler, always replace the protective dust cap and never remove the canister from the actuator.

Inhalers are equipped with a spray counter on the front. It tracks every spray and shows how much is left. A newly opened canister contains 120 sprays for patients 12 and up. Keep the actuator tip away from your septum, the wall between your two nostrils. Qnasl devices should be cleaned after every use. It takes Qnasl time to work. It can take two weeks for patients to notice a reduction in their symptoms after starting this medication.

Precautions and Warnings of Qnasl

Patients who have intranasal steroids or who have had a previous reaction to medications containing beclomethasone dipropionate should not take Qnasl. Those who have experienced recent nose blisters, ulcers, or sores or who have had nasal surgery within the past year should wait before starting Qnasl. Steroids can slow down the healing process for open wounds and stitches. You should let your doctor know if you have had any recent surgeries and procedures, or if you have an open wound with a risk of infection before starting Qnasl. Steroids like beclomethasone dipropionate can also suppress the immune system, thereby lowering a patient’s ability to fight against infection.

Taking more than your prescribed Qnasl dose or too many intranasal steroids can lead to an over-production of the cortisol hormone, a condition referred to as hypercorticism. When this occurs, the adrenal gland, which controls the production of cortisol in the body, produces too much cortisol. High levels of cortisol can mimic symptoms associated with Cushing’s syndrome, or hyperadrenocorticism, including but not limited to weight gain, fatigue, depression, and delayed healing. Other patients can experience lower than normal cortisol rates, or adrenal suppression. It’s important to monitor cortisol levels—your doctor may taper you off Qnasl should you experience hormonal changes.

Qnasl can aggravate asthma and chronic upper respiratory conditions like tuberculosis. Qnasl can also exacerbate symptoms associated with ocular herpes simplex and other eye disorders. Doctors do not fully understand Qnasl’s effect on pregnant women and women who are breastfeeding. If you fall into either of the above categories, speak to your doctor before taking Qnasl. Patients should never spray Qnasl anywhere else but inside the nose.

Qnasl Side Effects

Like most medications, side effects may occur while taking Qnasl. There are several possible side effects and while most like nasal dryness are mild, you should let your doctor know as soon as possible if any of the below side effects occur or if they worsen, particularly in children.

Common Side Effects

  • Nasal dryness and discomfort
  • Unusual or displeasing taste or smell
  • Nausea and vomiting
  • Body Aches
  • Fever
  • Chills
  • Headache
  • Weakness
  • Dizziness
  • Diarrhea


This medication can cause infections by lowering the immune system. Patients should monitor signs of infection (fever, nausea, vomiting, chills, fatigue, and body aches) and contact their doctor if these symptoms do not subside or intensify.

Rare Side Effects

  • Nosebleeds
  • ulcers, or sores;
  • hives or skin rashes;
  • blurred vision;
  • oral thrush and fungal infections in the nose, mouth, and throat;
  • pressure or fluid build-up in the eye, glaucoma, or cataracts;
  • and reduced or heightened adrenal hormones or function.


Rarer and more severe side effects include Weight loss or weight gain is possible when taking steroid-based medications—consult your doctor if you or your child notice weight changes. Patients using Qnasl Nasal Aerosol for several months or more should be examined by a doctor regularly for possible damage to the lining of the nose, or nasal mucosa. In some cases, patients have developed nasal septal perforation or puncturing of the tissue separating the right and left nostrils.

Allergic reactions may also occur while taking Qnasl. Contact your doctor or emergency services immediately should you experience signs of an allergic reaction. These symptoms include shortness of breath, swelling of the lips, face, or tongue, and difficulty swallowing or breathing.

Drugs Interactions with Qnasl

When inhaled, beclomethasone, the main ingredient can interact with other drugs. Esketamine, sold under the brand name Spravator, and ketamine, or Ketalar, stimulates the adrenal gland and leads to the overproduction of glucocorticoids, commonly known as steroid hormones. Patients should not take drugs containing esketamine when taking Qnasl.

If you have or will be receiving treatment for bladder cancer and recently have been or are currently taking Qnasl, make sure your doctor is aware before starting Adstiladrin (nadofaragene firadenovec) gene therapy. If you’ve been on beclomethasone nasal spray and are now taking nadofaragene firadenovec, you may be at risk of infection. This medication has also been found to negatively interact with BCG, or bacille Calmette-Guerin, the vaccine for tuberculosis which is also used to treat early-stage bladder cancer. Be sure to mention to your healthcare provider if you are currently taking any cancer medications. You should always provide your doctor with a current list of the medications you are taking, including prescriptions, over-the-counter drugs, vitamin supplements, and herbal remedies.

Strengths and Dosages of Qnasl

Strength and dosage vary by age and severity of symptoms. For children between the ages of four and 11 years old, doctors recommend a total of 80 mcg per day or 40 mcg per nostril. Typically, adults and adolescents 12 and up are prescribed 320 mcg daily. The recommended process for administering Qnasl is pumping 80 mcg of the nasal spray in each nostril, with a maximum of two sprays per nostril. Those taking this medication should not take more than four actuations, or pumps, per day.

Children Age 4-11 Adults (12 and older)
Dosage & Strength 1 spray in each nostril once a day (80 mcg total, 40 mcg per nostril). Up to 2 sprays in each nostril once a day (320 mcg total, 80 mcg per nostril).


Qnasl 80 mcg comes in a 10.6-gram inhaler containing 120 individual sprays, or actuations. For children, Qnasl 40 mcg comes in a 6.8-gram device containing 60 actuations.

FAQs of Qnasl

What does Qnasl do?

Qnasl treats and helps to alleviate allergy symptoms. It can help reduce several symptoms associated with seasonal and year-round outdoor allergies, like nasal congestion, runny nose, sneezing, and coughing. Qnasl can also alleviate symptoms associated with year-round indoor allergies like dust, pet dander, mold, or mildew.

How does Qnasl work?

Its main ingredient is a corticosteroid or steroid called beclomethasone dipropionate. This medication is taken once daily and the best results come from routine, daily usage. Adults can take up to 320 mcg every 24 hours, or a total of two sprays of 80 mcg per nostril. Once the medication has been directly sprayed into the nose, it begins working to reduce allergy-induced inflammation and itchiness.

What kind of symptoms can Qnasl help with?

Qnasl can treat common perennial and year-round allergy symptoms like congestion, itchy, runny nose as well as sneezing and coughing.

How do you administer Qnasl?

Qnasl is administered directly into the nose by spraying the medication once or twice in each nostril every 24 hours.

Is there a generic form of Qnasl?

No, there is no generic Qnasl.

Does Qnasl have a scent or odor?

No, Qnasl does not have a scent and patients should not expect to experience a smell or odor from the medication itself.

Will Qnasl make me drowsy?

No, Qnasl does not typically cause drowsiness.

Can you take other allergy medication while taking Qnasl?

Speak to your doctor before continuing to take other forms of allergy medication—either prescriptions or over-the-counter drugs.

Can I take Qnasl while pregnant or breastfeeding?

You should let your doctor know if you are, or plan to become, pregnant. Qnasl’s impact on fetal development and breast milk is unknown. Qnasl is a corticosteroid and there is evidence that other steroids can leak into breastmilk, although it’s perfectly safe to take them while breastfeeding at the direction of a doctor.

Are there any animal ingredients in Qnasl?

No, Qnasl does not include any animal products or ingredients.

IMPORTANT NOTE: The information provided here is for educational purposes only and is not intended to serve as medical advice, diagnosis, or treatment recommendations. It should not be taken as an endorsement of any specific medication or treatment. Individual health conditions and responses to treatment can vary greatly; therefore, this information should not be seen as a guarantee of safety, suitability, or effectiveness for any particular individual. Always consult with a healthcare professional for personalized medical advice and before making any decisions regarding your health or treatment plans.

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