- What is terbutaline, and how does it work (mechanism of action)?
- What brand names are available for terbutaline?
- Is terbutaline available as a generic drug?
- Do I need a prescription for terbutaline?
- What are the side effects of terbutaline?
- What is the dosage for terbutaline?
- Which drugs or supplements interact with terbutaline?
- Is terbutaline safe to take if I'm pregnant or breastfeeding?
- What else should I know about terbutaline?
What is terbutaline, and how does it work (mechanism of action)?
Terbutaline is a member of a class of drugs called beta adrenergic receptor agonists (stimulators) that is used for treating asthma and other diseases of the airways. Other drugs in the same class of drugs include albuterol (Proventil), metaproterenol (Alupent), pirbuterol (Maxair), and salmeterol (Serevent). Asthma is a breathing problem caused by narrowing of air passages (bronchial tubes) through which air moves in and out of the lungs. These airways can be narrowed due to the accumulation of mucus, spasm of the muscles that surround them (bronchospasm), or swelling of their linings due to the accumulation of fluid. Airway narrowing leads to shortness of breath, wheezing, and cough. Terbutaline is a bronchodilator, a medication that dilates (expands) air passages in the lungs. It attaches to beta adrenergic receptors on muscles surrounding the air passages, causing the muscles to relax and dilate the air passages. Wider air passages allow more air to flow in and out of the lungs. Increased airflow reduces shortness of breath, wheezing, and cough. Terbutaline also is used for delaying premature labor by relaxing the muscles of the uterus that are responsible for expelling the fetus at the time of delivery. The FDA approved terbutaline in 1974.
What brand names are available for terbutaline?
Brethine, Bricanyl, Brethaire are no longer available in the U.S.
Is terbutaline available as a generic drug?
GENERIC AVAILABLE: Yes
Do I need a prescription for terbutaline?
What are the side effects of terbutaline?
Terbutaline may cause side effects such as:
- heart palpitations,
- fast heart rate, and
- elevated blood pressure.
Vomiting, anxiety, restlessness, lethargy, excessive sweating, chest pain, and muscle cramping also may occur. Low blood potassium (hypokalemia) and high blood glucose have been associated with terbutaline.
Quick GuideAsthma Symptoms, Causes, and Medications
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
Use the pill identifier tool on RxList.