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Influence of food on the rate and extent of absorption of theophylline after single dose oral administration of a controlled release tablet. 1985

M Lagas, and J H Jonkman

Rate and extent of absorption of theophylline were determined in 7 healthy volunteers on pre- as well as on postprandial administration of commercially available controlled release tablets (Theograd-350 mg). In fasting subjects, maximum serum theophylline concentrations of 3.8 +/- 1.2 mg X 1(-1) (mean +/- SD) were reached at 3.4 +/- 1.2 hours after dosing, whereas under non-fasting conditions maximum serum levels of 5.8 +/- 1.3 mg X 1(-1) were found at 7.4 +/- 1.4 hours after the tablet was given. The bioavailability increased from 65 +/- 8%, observed on preprandial administration to 87 +/- 14%, when Theograd-350 mg tablets were taken after a meal. In conclusion, Theograd-350 mg tablets have a predictable absorption and give relatively high (87%) bioavailability, if the tablets are taken after a meal.

UI MeSH Term Description Entries
D007408 Intestinal Absorption Uptake of substances through the lining of the INTESTINES. Absorption, Intestinal
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D003692 Delayed-Action Preparations Dosage forms of a drug that act over a period of time by controlled-release processes or technology. Controlled Release Formulation,Controlled-Release Formulation,Controlled-Release Preparation,Delayed-Action Preparation,Depot Preparation,Depot Preparations,Extended Release Formulation,Extended Release Preparation,Prolonged-Action Preparation,Prolonged-Action Preparations,Sustained Release Formulation,Sustained-Release Preparation,Sustained-Release Preparations,Timed-Release Preparation,Timed-Release Preparations,Controlled-Release Formulations,Controlled-Release Preparations,Extended Release Formulations,Extended Release Preparations,Slow Release Formulation,Sustained Release Formulations,Controlled Release Formulations,Controlled Release Preparation,Controlled Release Preparations,Delayed Action Preparation,Delayed Action Preparations,Formulation, Controlled Release,Formulations, Controlled Release,Prolonged Action Preparation,Release Formulation, Controlled,Release Formulations, Controlled,Sustained Release Preparation,Timed Release Preparation,Timed Release Preparations
D004435 Eating The consumption of edible substances. Dietary Intake,Feed Intake,Food Intake,Macronutrient Intake,Micronutrient Intake,Nutrient Intake,Nutritional Intake,Ingestion,Dietary Intakes,Feed Intakes,Intake, Dietary,Intake, Feed,Intake, Food,Intake, Macronutrient,Intake, Micronutrient,Intake, Nutrient,Intake, Nutritional,Macronutrient Intakes,Micronutrient Intakes,Nutrient Intakes,Nutritional Intakes
D005260 Female Females
D005502 Food Substances taken in by the body to provide nourishment. Foods
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

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