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Brand names,
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Analogs
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Brand Names Mixture
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Chemical_Formula
C12H19NO3
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RX_link
http://www.rxlist.com/cgi/generic3/terbutaline.htm
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fda sheet
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msds (material safety sheet)
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Synthesis Reference
K. Wetterlin, L. A. Svensson, Belg. pat. 704,932; eidem, U.S. pat. 3,937,838 (1968, 1976 both to Draco)
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Molecular Weight
225.284 g/mol
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Melting Point
119-122 oC
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H2O Solubility
213 mg/mL
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State
Solid
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LogP
1.567
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Dosage Forms
Metered-dose (aerosol); Powder; Tablets; IV injection; Subcutaneous injection
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Indication
For the prevention and reversal of bronchospasm in patients 12 years of age and older with asthma and reversible bronchospasm associated with bronchitis and emphysema.
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Pharmacology
Terbutaline is a relatively selective beta2-adrenergic bronchodilator. The pharmacologic effects of beta adrenergic agonist drugs, including terbutaline, are at least in part attributable to stimulation through beta adrenergic receptors of intracellular adenyl cyclase, the enzyme which catalyzes the conversion of adenosine triphosphate (ATP) to cyclic- 3',5'- adenosine monophosphate (c-AMP). Increased c-AMP levels are associated with relaxation of bronchial smooth muscle and inhibition of release of mediators of immediate hypersensitivity from cells, especially from mast cells.
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Absorption
No information avaliable
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side effects and Toxicity
Terbutaline Sulfate: Oral LD50(rat) = 8.7 g/kg; Oral LD50(mouse) = 205 mg/kg; Oral LD50(dog) = 1.5 g/kg; IP LD50(rat)= 220 mg/kg ; IP LD50(mouse) = 130 mg/kg; Oral LD50(rabbit) = >8 g/kg; IV LD50(mouse) = 36 mg/kg; IV LD50(dog) = 116 mg/kg; IV LD50(rabbit) = 110 mg/kg
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Patient Information
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Organisms Affected
Humans and other mammals