Effect of two antacids on the bioavailability of paracetamol. 1985

H Albin, and F Demotes-Mainard, and G Vinçon, and A Bedjaoui, and B Begaud

The effect of two antacids on the bioavailability of paracetamol has been investigated in 12 young healthy volunteers. Following a random cross over design, each subject swallowed, on three separate occasions, one weak apart, 500 mg paracetamol alone, or together with two different aluminium hydroxide, magnesium hydroxide preparations (Dimalan and Maalox). Plasma paracetamol levels were measured by HPLC. The bioavailability of paracetamol was not altered by either antacid, but they both delayed the time to peak plasma concentration (0.85 h; 1.43 h; 1.25 h, without antacid, with Dimalan and with Maalox respectively). The peak plasma concentration was not affected by concurrent antacid administration.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008274 Magnesium A metallic element that has the atomic symbol Mg, atomic number 12, and atomic weight 24.31. It is important for the activity of many enzymes, especially those involved in OXIDATIVE PHOSPHORYLATION.
D008297 Male Males
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000082 Acetaminophen Analgesic antipyretic derivative of acetanilide. It has weak anti-inflammatory properties and is used as a common analgesic, but may cause liver, blood cell, and kidney damage. Acetamidophenol,Hydroxyacetanilide,Paracetamol,APAP,Acamol,Acephen,Acetaco,Acetominophen,Algotropyl,Anacin-3,Datril,N-(4-Hydroxyphenyl)acetanilide,N-Acetyl-p-aminophenol,Panadol,Tylenol,p-Acetamidophenol,p-Hydroxyacetanilide,Anacin 3,Anacin3
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
D000536 Aluminum Hydroxide A compound with many biomedical applications: as a gastric antacid, an antiperspirant, in dentifrices, as an emulsifier, as an adjuvant in bacterins and vaccines, in water purification, etc. Hydrated Alumina,Aldrox,Algeldrate,Alhydrogel,Alugel,Amphojel,Basalgel,Brasivil,Dialume,Nephrox,Pepsamer,Rocgel,Alumina, Hydrated,Hydroxide, Aluminum
D000863 Antacids Substances that counteract or neutralize acidity of the GASTROINTESTINAL TRACT. Alkalinizing Agent,Antacid,Alkalinizing Agents,Agent, Alkalinizing,Agents, Alkalinizing
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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