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  • Title: Posture and theophylline kinetics.
    Author: Warren JB, Cuss F, Barnes PJ.
    Journal: Br J Clin Pharmacol; 1985 May; 19(5):707-9. PubMed ID: 4005108.
    Abstract:
    The effect of posture on theophylline kinetics was examined in six healthy men who took 450 mg slow-release aminophylline orally at the same time of day on two separate occasions. On one day they remained standing and on the other supine throughout. Plasma theophylline was measured hourly for 6 h from ingestion. Mean theophylline levels were significantly higher in the standing position at all times (P less than 0.01). We conclude that diurnal variation in theophylline kinetics can be explained, at least in part, by differences in posture.
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