The correct name for Symbicort is Symbicort DuPont and the generic name is budesonide formoterol powder inhaler, which is usually effective when inhaled for 1 to 3 minutes. The drug is a combination of budesonide and formoterol fumarate as its main ingredients. Budesonide formoterol powder inhaler is indicated for the routine treatment of asthmatics who require a combination of inhaled corticosteroids (e.g. budesonide, etc.) and selective beta2-agonists (formoterol, etc.), and by itself is fast-acting, with the medication usually taking effect in 1 to 3 minutes. Adverse effects of the drug include, but are not limited to: headache, palpitations, tachycardia, and oral candida infections. It is contraindicated for those who are allergic to the drug. It is important to note that: water should be rinsed out of the mouth after each inhalation to minimize fungal oropharyngeal infections; vigilance is needed for the development of hypokalemia when using the drug at high doses. The drug needs to be used under the guidance of a doctor.