Serum levels of 8-methoxypsoralen: difference between two oral methods of administration. 1980

L Stolk, and A Kammeyer, and R H Cormane, and P A Van Zwieten

Serum levels of 8-methoxypsoralen were determined in six human volunteers after two different methods of oral administration. 8-Methoxypsoralen was given as an aqueous solution and as powder in gelatin capsules. The area under the curve (AUC) values were higher (P < 0.05) for the solution than for the capsules, indicating a higher bioavailability. Also, the peak serum levels were higher and were reached earlier when given as a solution. Considerable individual variation of the maximum serum levels and the area under the curve values was observed for both methods of administration, but the time required to reach the maximum serum level was more predictable after administration of the solution.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008297 Male Males
D008730 Methoxsalen A naturally occurring furocoumarin compound found in several species of plants, including Psoralea corylifolia. It is a photoactive substance that forms DNA ADDUCTS in the presence of ultraviolet A irradiation. 8-Methoxypsoralen,Ammoidin,Xanthotoxin,8-MOP,Deltasoralen,Dermox,Geroxalen,Meladinina,Meladinine,Meloxine,Methoxa-Dome,Méladinine,Oxsoralen,Oxsoralen-Ultra,Puvalen,Ultramop,8 MOP,8 Methoxypsoralen,8MOP,Methoxa Dome,Oxsoralen Ultra
D011208 Powders Substances made up of an aggregation of small particles, as that obtained by grinding or trituration of a solid drug. In pharmacy it is a form in which substances are administered. (From Dorland, 28th ed) Powder
D005260 Female Females
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
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
D012996 Solutions The homogeneous mixtures formed by the mixing of a solid, liquid, or gaseous substance (solute) with a liquid (the solvent), from which the dissolved substances can be recovered by physical processes. (From Grant & Hackh's Chemical Dictionary, 5th ed) Solution

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