Symbicort Inhaled Asthma Treatment

Inhaler on table Images

Symbicort is an asthma controller medication combining two drugs into one inhaler—an inhaled steroid and a long-acting beta agonist with each inhalation. Inhaled steroids are a first line treatment when you need more than just a short-acting relief medication.

More specifically, Symbicort contains:

  • Pulmicort (budesonide)—a steroid that improves asthma symptoms by decreasing irritation and inflammation.
  • Foradil (formoterol)—a long-acting bronchodilator, or LABA, that relieves bronchoconstriction. Symbicort provides bronchodilation by relaxing smooth muscle in the lungs and making the airways wider, thereby decreasing symptoms.

Symbicort is designed to relieve asthma symptoms such as:


  • Easier than taking each component medicine separately
  • Increases your compliance
  • Allows for lower doses of total inhaled corticosteroid, which may minimize potential side effects


  • Less flexibility in dosing
  • If Symbicort is used for relief of acute symptoms, you will receive a much higher dose of the steroid than is currently recommended

Form and Dosage

Symbicort is a metered dose inhaler. Each time you press the inhaler, a specific amount of medicine is aerosolized for inhalation.

Symbicort comes in two strengths: Symbicort 80/4.5 and Symbicort 160/4.5. The 80 and 160 refer to the amount (micrograms) of budesonide in each inhalation, while the amount of formoterol always stays the same at 4.5 micrograms.

Generally, Symbicort is taken two puffs twice per day, approximately 12 hours apart. If your asthma symptoms worsen or do not improve, your doctor will likely step you up to the formulation with more budesonide. Symbicort needs to be taken every day to improve your asthma symptoms.

Additionally, a few studies have suggested the possibility of using a combination product as your only inhaler for both control and acute symptoms, but you should discuss this with your doctor before trying it.

Potential Side Effects of Symbicort

As with most other drugs, only a small percentage of patients experience side effects. Potential side effects of Symbicort are similar to those of both inhaled steroids and LABAs.


Symbicort can be a useful tool for patients who are not able to achieve control of their asthma with an inhaled steroid alone. You and your physician need to discuss the possible risks and benefits of combination therapy, and make sure you notify your physician of any worsening of your asthma symptoms.

Was this page helpful?
Article Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. AstraZeneca. SYMBICORT® (budesonide and formoterol fumarate dihydrate). Highlights of prescribing information. Revised July 2019.

  2. Cates CJ, Karner C. Combination formoterol and budesonide as maintenance and reliever therapy versus current best practice (including inhaled steroid maintenance), for chronic asthma in adults and children. Cochrane Database Syst Rev. 2013;(4):CD007313. doi:10.1002/14651858.CD007313.pub3


Additional Reading