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Duorit B Inhaler is used in the treatment of asthma (wheezing and shortness of breath). It relaxes the muscles of the air passages and makes it easier to breathe.

Written By Dr. Sakshi Jain, MS, BDS,
Reviewed By Dr. Sachin Gupta, MD Pharmacology, MBBS,
Last updated on 20 Dec 2025 | 01:00 AM (IST)
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Duorit B Inhaler image
Duorit B Inhaler image

Product introduction

Your doctor will tell you how often you need to use your inhaler. It’s important that you take the lowest dose needed to effectively control your asthma. The effect of this medicine may be noticeable after a few days but will only reach its maximum after a few weeks. This medicine must be used regularly to be effective, so go on taking it even if you don't have any symptoms. That means it’s doing its job. If you stop taking it your asthma may get worse. It should not be used to relieve sudden asthma attacks. If an asthma attack occurs, use your quick-relief inhaler (reliever). To get the benefit from this medicine you need to make sure you get your inhaler technique right, otherwise, it does not work as well.

The most common side effects are hoarseness of voice, sore throat, fungal infection of mouth, respiratory tract infection, headache, and muscle cramp. If you get these, don’t stop taking it but do talk to your doctor. You can help prevent some of these symptoms by rinsing your mouth and throat with water or brushing your teeth after using your inhaler. There are other, rarer side effects which can be serious. Talk to your doctor if you're worried about them. In general, you should be trying to avoid situations that make your asthma worse (your triggers) and try not to smoke.

Ask your doctor whether it’s safe to take this medicine if you're pregnant or breastfeeding. Before taking it, you should tell your doctor if you have any kidney or liver diseases so that your doctor can prescribe a suitable dose for you.

Uses of Duorit B Inhaler

Benefits of Duorit B Inhaler

Asthma
Asthma is a condition in which your airways become narrow and as a result, breathing becomes difficult. Duorit B Inhaler helps in easy breathing by widening your airways. It also gives relief from symptoms such as tightness in your chest, shortness of breath, wheezing and coughing. Regular exercise and yoga can help improve the symptoms of asthma in the long term, in addition to improving overall health.

Side effects of Duorit B Inhaler

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Duorit B
  • Pharyngitis
  • Hoarseness of voice
  • Headache
  • Dizziness
  • Vomiting
  • Bronchitis (inflammation of the airways)
  • Dryness in mouth
  • Cough
  • Nausea
  • Thrush
  • Throat irritation
  • Upper respiratory tract infection
  • Fever

How to use Duorit B Inhaler

Check the label for directions before use. Shake the inhaler. While you are breathing in from mouth, press down on the inhaler one time to release the medication and hold your breath for 10 seconds. Repeat until you have inhaled the number of puffs as suggested by the doctor.Afterwards, rinse your mouth thoroughly with water and spit it out.

How Duorit B Inhaler works

Duorit B Inhaler is a combination of two medicines: Levosalbutamol and Beclometasone. Levosalbutamol is a bronchodilator which works by relaxing the muscles in the airways and widens the airways. Beclometasone is a steroid medicine. It acts by stopping the release of certain natural substances in body that cause inflammation (swelling) of the airways. Together, they make breathing easier.

All substitutes for Duorit B Inhaler

For information purposes only. Consult a doctor before taking any medicine.

Quick tips

  • You have been prescribed Duorit B Inhaler for the treatment of asthma.
  • This medicine is for inhalation only. The tablet should not be swallowed.
  • Take it at the same time everyday to maintain consistent level of medicine in your body.
  • It does not work right away and should not be used to relieve sudden breathing problems. Use your rescue inhaler to control sudden difficulty in breathing. 
  • Dry mouth may occur as a side effect. Frequent mouth rinses, good oral hygiene, increased water intake and sugarless candy may help.
  • Gargle with warm water after each inhalation to avoid any fungal infections in your mouth and throat.
  • Take the first dose of this medicine under medical supervision as it may cause wheezing or tightening of the airways (bronchospasm) immediately after using.
  • Your doctor may regularly monitor your  blood potassium levels as low oxygen levels in the blood (hypoxia) and medicines such as Duorit B Inhaler can lower potassium levels in blood.
  • Only very small amounts of Duorit B Inhaler may get absorbed into the bloodstream after inhalation. Hence, serious side effects are unlikely.
  • Do not stop taking Duorit B Inhaler suddenly even if you don’t currently have any symptoms as that may cause your breathing problems to come back.

Safety advice

Alcohol

Alcohol

UNSAFE
Do not drink alcohol while you are taking this medicine. Duorit B Inhaler may cause excessive drowsiness when taken with alcohol.
Pregnancy

Pregnancy

CONSULT YOUR DOCTOR
The safety of Duorit B Inhaler during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.
Breast feeding

Breast feeding

SAFE IF PRESCRIBED
Duorit B Inhaler may be safe to use during breastfeeding. Animal studies have shown low or no adverse effects to the developing baby; however, there are limited human studies.
Driving

Driving

UNSAFE
Duorit B Inhaler may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.
Kidney

Kidney

No interaction found/established
Liver

Liver

No interaction found/established

Frequently asked questions

Avoid using Duorit B Inhaler if you are using anticholinergic, beta-adrenergic agents, beta-blockers, diuretics, digoxin, MAO inhibitors, or anti-depressants.
Keep this medicine in the container it came in, tightly closed. Store it according to the instructions mentioned on the pack or label. Dispose of the unused medicine. Make sure it is not consumed by pets, children and other people.
If you miss a dose or forget to take your medicine, take it as soon as you can. However, if it is almost time for your next dose, skip the missed dose. Do not double your dose to make up for a missed dose.
Yes, the use of Duorit B Inhaler can cause dizziness (feeling faint, weak, unsteady or lightheaded) in some patients. If you feel dizzy or lightheaded, it is better to rest for some time and resume once you feel better.

Fact Box

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Agrosaf Pharmaceuticals
Address: Raman Tower, 2ND FLOOR, Sanjay Place, Agra, Uttar Pradesh 282002

Vendor Details

Country of origin: India
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