caffeine + paracetamol + cephalexin + ibuprofen

This entry refers to a specific set of four pharmacological agents—caffeine, paracetamol (acetaminophen), cephalexin, and ibuprofen—utilized in a clinical trial conducted by the King Faisal Specialist Hospital & Research Center. The study (NCT02444429) investigated whether the placebo effect, or the psychological expectation of receiving a drug, modulates the bioavailability and pharmacokinetics of these substances. Caffeine acts as a central nervous system stimulant; paracetamol is an analgesic and antipyretic; cephalexin is a first-generation cephalosporin antibiotic; and ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID). The trial used these drugs as models to explore the interaction between psychological expectation and drug metabolism, specifically testing if the placebo effect could prolong drug half-life or alter absorption profiles.

Other names

caffeineparacetamolcephalexinibuprofen