What Factors Affect Symbicort® Dosage?

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  • Written By: B. Chisholm
  • Edited By: O. Wallace
  • Last Modified Date: 06 October 2019
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The Symbicort® dosage depends on a number of factors, the main one being the severity of the disease being treated. The main indications for the use of Symbicort® inhalers is asthma and Chronic Obstructive Pulmonary Disease (COPD). Symbicort® dosage will be usually started at the lower end and increased, if necessary, by the prescribing doctor.

Symbicort® is a combination of formoterol and budesonide and is given as an inhalation. It is available in most countries by prescription only and the combination may be known by different trade names according to manufacturer. There are a number of different strength inhalers available.

Formoterol is a beta 2 agonist or bronchodilator which works to open the airways in the lungs. Budesonide is a corticosteroid which mimics the action of chemicals in the body to decrease inflammation in the lungs. The two work together, by different mechanisms, to prevent attacks of asthma and COPD. The Symbicort® dosage will differ according to whether asthma or COPD is being treated.

The usual Symbicort® dosage is two inhalations twice a day. If the asthma or COPD is not controlled the strength of the inhaler may be increased, or a second agent may be added, either chronically, or for use during acute attacks. The doctor’s instructions should always be followed and urgent medical attention be sought should the asthma or COPD not be controlled at the prescribed Symbicort® dosage.


As with any medication, Symbicort® may interact with other drugs. All other medication, including homeopathic, over-the-counter and natural medicines should be discussed with the prescribing doctor. Other clinical conditions, pregnancy, desired pregnancy and lactation should also be disclosed.

Symbicort® may cause unwanted side effects in some patients. These may include palpitations or a fast heart beat, tremor and headache. It is important to rinse the mouth and spit the water out after using Symbicort®, as it may result in thrush, a fungal infection in the mouth, or hoarseness. Should adverse effects be severe, the prescribing doctor should be contacted.

When Symbicort® is first prescribed, the doctor or pharmacist will show the patient how to use the inhaler in order to get the correct dose. The device should always be used in this manner. If the patient is unsure, they should ask for help from a health professional. Children may be given an additional device called a spacer to make administration easier. It is vital not to under-dose or exceed the prescribed dosage to ensure optimal therapy.


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