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Portolés, A. et al.

Portolés, Calvo, Terleira, Laredo, Resplandy, Gorostiaga, Moreno,

Lack of pharmacokinetic interaction between omeprazole or lansoprazole and ivabradine in healthy volunteers: an open-label, randomized, crossover, pharmacokinetic interaction clinical trial.

The effects of omeprazole and lansoprazole (CYP3A4 inhibitors) on the pharmacokinetics of a single dose of ivabradine (metabolized via CYP3A4) and its active metabolite (S18982) were assessed. Pharmacodynamics and safety were secondary objectives. An open-label, randomized, crossover, phase I, pharmacokinetic interaction design was used. Volunteers received a single oral dose of ivabradine (10 mg), were randomized to receive either omeprazole (40 mg) or lansoprazole (60 mg) for 5 days, and were administered an ivabradine dose on the sixth day. Crossover was performed after washout. Pharmacokinetic parameters for ivabradine did not vary significantly after omeprazole (C(max): 45.0 +/- 36.6 vs 42.7 +/- 27.6 ng/mL, P = .98; AUC: 128 +/- 87 vs 126 +/- 63 ng/mL, P = .82) or lansoprazole administration (C(max): 45.0 +/- 36.6 vs 41.3 +/- 29.4 ng/mL, P = .70; AUC: 128 +/- 87 vs 123 +/- 50, P = .73). Analyses of S18982 pharmacokinetic parameters showed similar results. Coadministration of either omeprazole or lansoprazole did not significantly affect the pharmacokinetics of a single dose of ivabradine. No pharmacodynamic interaction or safety concerns were evidenced.[1]

References

Lack of pharmacokinetic interaction between omeprazole or lansoprazole and ivabradine in healthy volunteers: an open-label, randomized, crossover, pharmacokinetic interaction clinical trial. Portolés, A., Calvo, A., Terleira, A., Laredo, L., Resplandy, G., Gorostiaga, C., Moreno, A. Journal of clinical pharmacology. (2006) [Pubmed]

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