PMID- 29270003 OWN - NLM STAT- MEDLINE DCOM- 20180810 LR - 20220318 IS - 1177-8881 (Electronic) IS - 1177-8881 (Linking) VI - 11 DP - 2017 TI - Comparative pharmacokinetics of a fixed-dose combination vs concomitant administration of telmisartan and S-amlodipine in healthy adult volunteers. PG - 3543-3550 LID - 10.2147/DDDT.S148534 [doi] AB - OBJECTIVE: This study compared the pharmacokinetic (PK) and safety profiles of a fixed-dose combination (FDC) formulation of telmisartan and S-amlodipine with those of concomitant administration of the two drugs. MATERIALS AND METHODS: This was an open-label, randomized, crossover study in healthy male Koreans. All subjects were administered an FDC tablet containing 40 mg telmisartan and 5 mg S-amlodipine and were also coadministered the same dose of both drugs given separately. The crossover study design included a 14-day washout period between the two treatments. Blood samples were collected up to 168 h following drug administration. The plasma concentrations of telmisartan and S-amlodipine were determined by liquid chromatography tandem mass spectrometry. PK parameters and plasma concentration-time curves were compared. Safety was assessed by measuring vital signs, clinical laboratory tests, physical examinations, and patient interviews. RESULTS: The geometric mean ratios and 90% CIs for the maximum plasma concentration (C(max)) and area under the curve from time zero to the last sampling time (AUC(t)) were 0.8782 (0.8167-0.9444) and 0.9662 (0.9210-1.0136) for telmisartan and 1.0069 (0.9723-1.0427) and 1.0324 (0.9969-1.0690) for S-amlodipine, respectively. A total of 36 adverse events (AEs) were reported by 23 subjects, but no statistical differences were observed between the two treatments. The most frequently reported AE was a mild-to-moderate headache that was generally self-limiting. CONCLUSION: For both telmisartan and S-amlodipine, the C(max) and AUC(t) 90% CIs were between ln (0.8) and ln (1.25). These results suggest that the FDC formulation is pharmacokinetically bioequivalent and has a similar safety profile to the coadministration of these drugs. FAU - Oh, Minkyung AU - Oh M AD - Department of Pharmacology. AD - PharmacoGenomics Research Center, Inje University College of Medicine, Busan. FAU - Park, Sung-Eun AU - Park SE AD - Department of Clinical Pharmacology, Inje University Busan Paik Hospital, Busan, Republic of Korea. FAU - Ghim, Jong-Lyul AU - Ghim JL AD - Department of Pharmacology. AD - PharmacoGenomics Research Center, Inje University College of Medicine, Busan. AD - Department of Clinical Pharmacology, Inje University Busan Paik Hospital, Busan, Republic of Korea. FAU - Choi, Young-Kyung AU - Choi YK AD - Department of Pharmacology. FAU - Shim, Eon-Jeong AU - Shim EJ AD - Department of Pharmacology. AD - PharmacoGenomics Research Center, Inje University College of Medicine, Busan. AD - Department of Clinical Pharmacology, Inje University Busan Paik Hospital, Busan, Republic of Korea. FAU - Shin, Jae-Gook AU - Shin JG AD - Department of Pharmacology. AD - PharmacoGenomics Research Center, Inje University College of Medicine, Busan. AD - Department of Clinical Pharmacology, Inje University Busan Paik Hospital, Busan, Republic of Korea. FAU - Kim, Eun-Young AU - Kim EY AD - Department of Pharmacology. AD - PharmacoGenomics Research Center, Inje University College of Medicine, Busan. AD - Department of Clinical Pharmacology, Inje University Busan Paik Hospital, Busan, Republic of Korea. LA - eng PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial DEP - 20171211 PL - New Zealand TA - Drug Des Devel Ther JT - Drug design, development and therapy JID - 101475745 RN - 0 (Benzimidazoles) RN - 0 (Benzoates) RN - 0 (Tablets) RN - 1J444QC288 (Amlodipine) RN - U5SYW473RQ (Telmisartan) SB - IM MH - Administration, Oral MH - Adult MH - Amlodipine/administration & dosage/*pharmacokinetics MH - Benzimidazoles/administration & dosage/*pharmacokinetics MH - Benzoates/administration & dosage/*pharmacokinetics MH - Cross-Over Studies MH - Dose-Response Relationship, Drug MH - Healthy Volunteers MH - Humans MH - Male MH - Maximum Tolerated Dose MH - Middle Aged MH - Tablets/administration & dosage/pharmacokinetics MH - Telmisartan MH - Young Adult PMC - PMC5729885 OTO - NOTNLM OT - S-amlodipine OT - bioequivalence OT - fixed-dose combination OT - pharmacokinetics OT - telmisartan COIS- Disclosure The authors report no conflicts of interest in this work. EDAT- 2017/12/23 06:00 MHDA- 2018/08/11 06:00 PMCR- 2017/12/11 CRDT- 2017/12/23 06:00 PHST- 2017/12/23 06:00 [entrez] PHST- 2017/12/23 06:00 [pubmed] PHST- 2018/08/11 06:00 [medline] PHST- 2017/12/11 00:00 [pmc-release] AID - dddt-11-3543 [pii] AID - 10.2147/DDDT.S148534 [doi] PST - epublish SO - Drug Des Devel Ther. 2017 Dec 11;11:3543-3550. doi: 10.2147/DDDT.S148534. eCollection 2017.