What special precautions should I follow? 

Before using albuterol inhalation:

• Tell  your doctor and pharmacist if you are allergic to albuterol (Vospire ER, in Combivent, in Duoneb), levalbuterol (Xoponex), or any other medications.
• Tell  your doctor and pharmacist what prescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: beta blockers such as atenolol (Tenormin), labetalol (Normodyne), metoprolol (Lopressor, Toprol XL), nadolol (Corgard), and propranolol (Inderal); digoxin (Lanoxin); diuretics ('water pills'); epinephrine (Epipen, Primatene Mist); other inhaled medications used to relax the air passages such as metaproterenol (Alupent) and levalbuterol (Xoponex); and medications for colds.
• Also tell your doctor or pharmacist if you are taking the following medications or have stopped taking them within the past 2 weeks: antidepressants such as amitriptyline (Elavil), amoxapine (Asendin), clomipramine (Anafranil), desipramine (Norpramin), doxepin (Adapin, Sinequan), imipramine (Tofranil), nortriptyline (Aventyl, Pamelor), protriptyline (Vivactil), and trimipramine (Surmontil); and monoamine oxidase (MAO) inhibitors, including isocarboxazid (Marplan), phenelzine (Nardil), selegiline (Eldepryl, Emsam), and tranylcypromine (Parnate). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
• Tell  your doctor if you have or have ever had an irregular heartbeat, heart disease, high blood pressure, hyperthyroidism (condition in which there is too much thyroid hormone in the body), diabetes, or seizures.
• Tell  your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while using albuterol, call your doctor.
• You  should know that albuterol inhalation sometimes causes wheezing and difficulty breathing immediately after it is inhaled. If this happens, call your doctor right away. Do not use albuterol inhalation again unless your doctor tells you that you should.

What should I do if I forget a dose? 

If you have been told to use albuterol inhalation on a regular schedule, use the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not use a double dose to make up for a missed one.