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Pharmacokinetics of amdinocillin and pivamdinocillin in normal volunteers. 1983

H C Neu, and S Srinivasan, and E L Francke, and C Ortiz-Neu, and J G Christenson

The pharmacokinetic parameters of amdinocillin and pivamdinocillin were studied in 12 normal volunteers. Plasma amdinocillin concentrations were determined by microbiologic assay and urine concentrations by high performance liquid chromatography. Pharmacokinetic parameters were calculated by a two-compartment open model for the intravenous infusion and by a one-compartment model with zero-order absorption for the oral doses. The mean peak serum level after the intravenous infusion of 500 mg was 39 micrograms/ml. At one and a half hours after the oral administration of 250 mg and 500 mg doses, mean peaks were 1.93 and 2.66 micrograms/ml respectively. Half-life was one hour for all doses. Maximal plasma concentration did not increase proportionally with dose. Bioavailability was 45 percent after the 250 mg dose and 38 percent after the 500 mg dose.

UI MeSH Term Description Entries
D007263 Infusions, Parenteral The administration of liquid medication, nutrient, or other fluid through some other route than the alimentary canal, usually over minutes or hours, either by gravity flow or often by infusion pumping. Intra-Abdominal Infusions,Intraperitoneal Infusions,Parenteral Infusions,Peritoneal Infusions,Infusion, Intra-Abdominal,Infusion, Intraperitoneal,Infusion, Parenteral,Infusion, Peritoneal,Infusions, Intra-Abdominal,Infusions, Intraperitoneal,Infusions, Peritoneal,Intra Abdominal Infusions,Intra-Abdominal Infusion,Intraperitoneal Infusion,Parenteral Infusion,Peritoneal Infusion
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008657 Metabolic Clearance Rate Volume of biological fluid completely cleared of drug metabolites as measured in unit time. Elimination occurs as a result of metabolic processes in the kidney, liver, saliva, sweat, intestine, heart, brain, or other site. Total Body Clearance Rate,Clearance Rate, Metabolic,Clearance Rates, Metabolic,Metabolic Clearance Rates,Rate, Metabolic Clearance,Rates, Metabolic Clearance
D008954 Models, Biological Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment. Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D010397 Penicillanic Acid A building block of penicillin, devoid of significant antibacterial activity. (From Merck Index, 11th ed) Acid, Penicillanic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
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
D000560 Amdinocillin An amidinopenicillanic acid derivative with broad spectrum antibacterial action. Mecillinam,FL-1060,Penicillin Hx,FL 1060,FL1060
D000561 Amdinocillin Pivoxil Pivaloyloxymethyl ester of amdinocillin that is well absorbed orally, but broken down to amdinocillin in the intestinal mucosa. It is active against gram-negative organisms and used as for amdinocillin. Pivmecillinam,FL-1039,Mecillinam Pivaloyl Ester,Pivamdinocillin,Pivmecillinam Hydrochloride,Selexid,FL 1039,FL1039,Hydrochloride, Pivmecillinam,Pivaloyl Ester, Mecillinam,Pivoxil, Amdinocillin

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