Terbutaline
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| Terbutaline
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| Systematic (IUPAC) name | |
| 5-(1-hydroxy-2-tert-butylamino-ethyl)benzene-1,3-diol | |
| Identifiers | |
| CAS number | |
| ATC code | R03 R03CC03 |
| PubChem | |
| DrugBank | |
| Chemical data | |
| Formula | C12H19NO3 |
| Mol. mass | 225.284 g/mol |
| Pharmacokinetic data | |
| Bioavailability | ? |
| Metabolism | GI tract (oral), liver; CYP450: unknown |
| Half life | urine 90% (60% unchanged), bile/faeces; Half-life: 3-4h |
| Excretion | ? |
| Therapeutic considerations | |
| Pregnancy cat. |
B |
| Legal status | |
| Routes | SQ, Oral, Inhaled |
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Overview
Terbutaline (trade names Brethine, Bricanyl, or Brethaire) is a β2-adrenergic receptor agonist, used as a fast-acting bronchodilator (often used as a short-term asthma treatment) and as a tocolytic to delay premature labour. The inhaled form of terbutaline starts working within 15 minutes and can last up to 6 hours.
Terbutaline as a treatment for premature labour is an off-label use not approved by the FDA. It is a pregnancy category 'B' medication and is routinely prescribed to stop contractions.
Side Effects
Maternal - tachycardia, nervousness, tremors, headache and possible pulmonary edema. Fetal - tachycardia and hypoglycemia. Terbutaline is preferred over Ritodrine because it has minimal effects on blood pressure.
References
Drugs for obstructive airway diseases: asthma/COPD (R03) | |
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| Adrenergics, inhalants | Short acting β2-agonists: Salbutamol/Levosalbutamol • Fenoterol • Terbutaline Long acting β2-agonists (LABA): Bambuterol • Clenbuterol • Formoterol • Salmeterol other: Epinephrine • Isoproterenol • Orciprenaline |
| Glucocorticoids | Beclometasone • Budesonide • Ciclesonide • Fluticasone • Mometasone |
| Anticholinergics | Ipratropium • Tiotropium |
| Mast cell stabilizers | Cromoglicate • Nedocromil |
| Xanthines | Aminophylline • Theobromine • Theophylline |
| Leukotriene antagonists | Montelukast • Pranlukast • Zafirlukast |
| Combination products | Budesonide/formoterol • Fluticasone/salmeterol • Ipratropium/salbutamol |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
