The comparative bioavailability of carbamazepine in 100 mg and 200 mg tablets. 1979

G A Smith, and W D Hooper, and J H Tyrer, and M J Eadie, and B Werth

1. The bioavailabilities of carbamazepine in 100 mg and 200 mg tablets have been compared in a cross-over study of six subjects after two 600 mg doses of the drug, the different preparations being taken at 3 week intervals. 2. Areas under the plasma level curves, absorption rate constants and times to achieve peak plasma levels showed little difference between the two preparations. These findings suggest similar rates and extents of bioavailability of carbamazepine in the two preparations. 3. Calculated mean absorption and elimination parameters for carbamazepine were as follows: kabs = 0.1081 h-1, (s.d. = 0.0289); Tmax = 23.39 h, (s.d. = 8.66); k = 0.0191 h-1, (s.d. = 0.0033); VD = 0.989 1/kg, (s.d. = 0.159); and clearance = 0.0185 1/kg h, (s.d. = 0.0015).

UI MeSH Term Description Entries
D007408 Intestinal Absorption Uptake of substances through the lining of the INTESTINES. Absorption, Intestinal
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008297 Male Males
D002220 Carbamazepine A dibenzazepine that acts as a sodium channel blocker. It is used as an anticonvulsant for the treatment of grand mal and psychomotor or focal SEIZURES. It may also be used in the management of BIPOLAR DISORDER, and has analgesic properties. Amizepine,Carbamazepine Acetate,Carbamazepine Anhydrous,Carbamazepine Dihydrate,Carbamazepine Hydrochloride,Carbamazepine L-Tartrate (4:1),Carbamazepine Phosphate,Carbamazepine Sulfate (2:1),Carbazepin,Epitol,Finlepsin,Neurotol,Tegretol
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D001682 Biological Availability The extent to which the active ingredient of a drug dosage form becomes available at the site of drug action or in a biological medium believed to reflect accessibility to a site of action. Availability Equivalency,Bioavailability,Physiologic Availability,Availability, Biologic,Availability, Biological,Availability, Physiologic,Biologic Availability,Availabilities, Biologic,Availabilities, Biological,Availabilities, Physiologic,Availability Equivalencies,Bioavailabilities,Biologic Availabilities,Biological Availabilities,Equivalencies, Availability,Equivalency, Availability,Physiologic Availabilities
D013607 Tablets Solid dosage forms, of varying weight, size, and shape, which may be molded or compressed, and which contain a medicinal substance in pure or diluted form. (Dorland, 28th ed) Tablet
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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