Absorption of orally administered tritium labelled theophylline preparations

  title={Absorption of orally administered tritium labelled theophylline preparations},
  author={Knut B. B{\"u}low and Hans Larsson},
  journal={Pharmacologia Clinica},
SummaryThe absorption and excretion of aminophylline, hydroxypropyltheophylline (Theon®) and choline theophyllinate (Choledyl®) after oral administration in capsules were studied by determining theophylline levels in plasma and urine. For comparison, a liquid formula containing choline theophyllinate, Brondaxin Syrup®, was also included in the investigation. — The current spectrophotometric method used by most investigators proved unreliable for measuring low concentrations of theophylline… 
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