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  • Willi Weber, Manfred Nitz, Michael Looby
  • Chemistry, Medicine
  • Journal of Pharmacokinetics and Biopharmaceutics
  • 1990 (First Publication: 1 December 1990)
  • The pharmacokinetics of thiamine in plasma and urine was investigated in 13 healthy and 3 renal-insufficient volunteers. Doses ranging from 5 to 200mg thiamine hydrochloride were administered eitherContinue Reading
  • Willi Weber, Susanne Toussaint, Michael Looby, Manfred Nitz, Helmut Kewitz
  • Chemistry, Medicine
  • Journal of Pharmacokinetics and Biopharmaceutics
  • 2005 (First Publication: 1 October 1991)
  • The renal clearance of N1-methylnicotinamide (NMN) was studied in 8 young women at physiological steady state and at steady state following a combined loading bolus and in infusion. Urinary NMNContinue Reading
  • Ulrich Bickel, Torben Thomsen, +4 authors Helmut Kewitz
  • Medicine
  • Neurobiology of Aging
  • 1990 (First Publication: 30 June 1990)
  • Measurements were done to determine the plasma concentrations of galanthamine and two of its metabolites, as well as the corresponding inhibition of acetylcholinesterase activity in erythrocytesContinue Reading