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Pharmacokinetic Properties of Ibuprofen (IBU) From the Fixed‐Dose Combination IBU/Caffeine (400/100 mg; FDC) in Comparison With 400 mg IBU as Acid or Lysinate Under Fasted and Fed Conditions—Data From 2 Single‐Center, Single‐Dose, Randomized Crossover Studies in Healthy Volunteers
Author(s) -
Weiser Thomas,
Schepers Cornelia,
Mück Tobias,
Lange Robert
Publication year - 2019
Publication title -
clinical pharmacology in drug development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.711
H-Index - 22
eISSN - 2160-7648
pISSN - 2160-763X
DOI - 10.1002/cpdd.672
Subject(s) - ibuprofen , medicine , pharmacokinetics , meal , crossover study , caffeine , pharmacology , analgesic , alternative medicine , pathology , placebo
Rapid onset of analgesic action is linked with rapid absorption of analgesics (high maximum concentration [C max ] and short time to maximum concentration [t max ]). After overnight fasting, ibuprofen lysinate reaches higher peak plasma levels (C max ) earlier than ibuprofen acid (t max ) with comparable exposure (area under the plasma concentration–time curve [AUC]); however, subjects usually take ibuprofen with or within a short time of a meal. Therefore, pharmacokinetic (PK) studies under fed conditions may better characterize properties under real‐life conditions. We investigated a new fixed‐dose combination (FDC) of ibuprofen acid 400 mg and caffeine 100 mg in 2 single‐dose, randomized, crossover PK studies in healthy subjects (both N = 36). The FDC was compared with ibuprofen 400 mg as acid and as lysinate after an overnight fast in Study 1, and with ibuprofen lysinate after a meal in Study 2. After fasting, results for ibuprofen in the FDC were comparable with those from ibuprofen acid alone. Caffeine did not affect the C max , t max , and AUC. As expected, a higher C max and shorter t max were observed with ibuprofen lysinates vs the FDC. Compared with administration after fasting, C max and t max for ibuprofen lysinate administered postprandially were markedly different, while with FDC, these parameters were less sensitive to food intake. Taken after a meal, ibuprofen in the FDC reached t max earlier than ibuprofen lysinate (median 1.25 vs 1.63 hours), and C max was approximately 13% higher, with comparable AUC, suggesting that the profile of ibuprofen was in favor of the FDC compared with ibuprofen lysinate. Thus, under real‐life conditions, ibuprofen lysinate had no PK advantage over the FDC. All preparations were well tolerated.