No abstract available
Publication types
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Clinical Trial
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Randomized Controlled Trial
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Administration, Oral
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Adult
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Asthma / drug therapy*
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Bronchodilator Agents*
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Clinical Trials as Topic
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Dose-Response Relationship, Drug
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Double-Blind Method
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Drug Combinations
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Drug Tolerance
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Ephedrine / therapeutic use*
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Female
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Forced Expiratory Flow Rates
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Humans
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Male
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Phenobarbital / therapeutic use
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Theophylline / blood
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Theophylline / therapeutic use*
Substances
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Bronchodilator Agents
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Drug Combinations
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Theophylline
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Ephedrine
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Phenobarbital