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Bioavailability of oral dexamethasone

Clinical Pharmacology & Therapeutics, 1975
Bioavailabilities of dexamethasone tablets and elixir in man were evaluated by each of 3 model‐independent methods of pharmacokinetic analysis employing plasma and urinary values as determined by radioimmune assay. There were no significant differences among the results determined by the 3 methods nor between the respective availabilities of the !Wo ...
D E, Duggan   +4 more
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The Bioavailability of Oral Nitroglycerin

Journal of Pharmaceutical Sciences, 1986
In the 1970's, the efficacy of oral nitroglycerin therapy was seriously challenged, primarily on the basis of animal studies showing complete first-pass hepatic metabolism of nitroglycerin. Today, it is generally accepted that high oral doses of nitroglycerin do show antianginal efficacy. It has been suggested that this efficacy results from saturation
P K, Noonan, L Z, Benet
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Bioavailability of oral micronized progesterone

Fertility and Sterility, 1985
Progesterone (P) has not been administered orally because of reportedly poor bioavailability and a rapid clearance rate. Unfortunately, the synthetic derivatives, although orally active, have a number of disadvantages and fail to mimic natural P completely.
W S, Maxson, J T, Hargrove
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The Absolute Bioavailability of Oral Melatonin

The Journal of Clinical Pharmacology, 2000
The absolute bioavailability of oral melatonin tablets was studied in 12 normal healthy volunteers. Subjects were administered, in a randomized crossover fashion, melatonin 2 mg intravenously and 2 and 4 mg orally. Blood was sampled over approximately eight (estimated) half‐lives.
R L, DeMuro   +4 more
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Oral Bioavailability

2010
Soil ingestion is a key exposure pathway in Human Health Risk Assessment for contaminants in soil. The theory and mechanisms of how contaminants in a soil enter the human body through the gastrointestinal tract are outlined. The methods available for measuring human exposure using human, animal and validated in-vitro laboratory methods are described ...
Cave, Mark   +4 more
openaire   +3 more sources

Oral bioavailability of clonidine in children

Pediatric Anesthesia, 2010
SummaryBackground: Oral clonidine is used as premedication in children. The bioavailability of clonidine given orally in adults is 75–100% but is unknown in children.Methods: Children (3–10 years) undergoing adenotonsillectomy were administered oral clonidine 4 mcg·kg−1mixed with apple fruit drink as premedication.
Peter, Larsson   +6 more
openaire   +2 more sources

Studies of the oral bioavailability of alendronate*

Clinical Pharmacology & Therapeutics, 1995
Clinical studies were performed to examine the oral bioavailability of alendronate (4-amino-1-hydroxy-butylidene-1,1-bisphosphonate monosodium). All studies, with the exception of one performed in men, involved postmenopausal women. Short-term (24 to 36 hours) urinary recovery of alendronate after an intravenous dose of 125 to 250 micrograms averaged ...
B J, Gertz   +8 more
openaire   +2 more sources

Variable Bioavailability of Oral Melatonin

New England Journal of Medicine, 1997
To the Editor: It has been claimed that melatonin has many actions, mostly on the basis of uncontrolled studies of widely varying oral doses. It is commonly assumed that the administered dosage of melatonin bears a direct relation to its circulating concentration. We estimated the bioavailability of oral melatonin by determining the pharmacokinetics of
W L, Di   +3 more
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