Proventil HFA is one of a group of medicines called Adrenergic Bronchodilators, and is breathed in through the mouth to open up the air passages of the lungs. Proventil HFA is used to treat the symptoms of asthma, chronic bronchitis, emphysema, and other lung diseases.
Be sure to tell your doctor of any allergies you have whether it is to medication or food, preservatives, or dyes. Also, tell your doctor of any other medications you are taking, including vitamins and supplements, and any medical conditions you may have.
Avoid tobacco products when taking this medicine.
It is very important that you take this medicine exactly as your doctor tells you to. Do not take more or less medicine than directed, and never stop taking Proventil HFA without discussing it with your doctor first.
If you miss a dose of this medicine, take it as soon as you remember, then space out the remaining doses evenly throughout the day. Do NOT double doses.
Check with your doctor immediately if any of the following side effects occur: dizziness, severe; feeling of choking, irritation, or swelling in throat; flushing or redness of skin; hives; increased shortness of breath; skin rash; swelling of face, lips, or eyelids; tightness in chest or wheezing, or troubled breathing.
Albuterol sulfate is the official generic name in the United States. The World Health Organization recommended name for the drug is salbutamol sulfate. The molecular weight of albuterol sulfate is 576.7, and the empirical formula is (C13H21NO3)2•H2SO4. Albuterol sulfate is a white to off-white crystalline solid. It is soluble in water and slightly soluble in ethanol. PROVENTIL HFA Inhalation Aerosol is a pressurized metered-dose aerosol unit for oral inhalation. It contains a microcrystalline suspension of albuterol sulfate in propellant HFA-134a (1,1,1,2-tetrafluoroethane), ethanol, and oleic acid. Each actuation delivers 120 mcg albuterol sulfate, USP from the valve and 108 mcg albuterol sulfate, USP from the mouthpiece (equivalent to 90 mcg of albuterol base from the mouthpiece). Each canister provides 200 inhalations. It is recommended to prime the inhaler before using for the first time and in cases where the inhaler has not been used for more than 2 weeks by releasing four “test sprays” into the air, away from the face.
Proventil has the following structural formula: