Blood and plasma concentrations of butalbital following single oral doses in man.

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Drost ML, Walter L

Blood and plasma concentrations of butalbital following single oral doses in man.

J Anal Toxicol. 1988 Nov-Dec;12(6):322-4.

PubMed ID
3244271 [ View in PubMed
]
Abstract

Blood and plasma concentrations of butalbital (from Fiorinal) were determined in a small group of healthy volunteers after single oral doses of 100 mg of butalbital. Butalbital was quantitated by high-performance liquid chromatography with ultraviolet detection. Typical blood concentrations of butalbital peaked at 2.1 mg/L and declined to 1.5 mg/L at 24 h. The half-lives in blood were between 35 and 87.5 h with a mean of 61 h. Whole blood to plasma ratios were also determined.

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