Adults 18 to 45, any sex, with Healthy Participants. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Cmax: Maximum Observed Plasma Concentration for Free Base of TAK-438 (TAK-438F) and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 1Primary· Day 1 pre-dose and at multiple timepoints (up to 48 hours) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
9.148
± 2.9972
TAK-438 20 mg Once Daily
18.18
± 4.4973
TAK-438 20 mg Twice Daily
25.23
± 10.017
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
38.32
± 8.6143
TAK-438 20 mg Once Daily
67.95
± 23.388
TAK-438 20 mg Twice Daily
59.02
± 18.443
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
2.840
± 1.0442
TAK-438 20 mg Once Daily
5.155
± 2.7868
TAK-438 20 mg Twice Daily
4.879
± 2.2426
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
15.42
± 3.7788
TAK-438 20 mg Once Daily
25.63
± 7.8650
TAK-438 20 mg Twice Daily
25.67
± 5.9219
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
28.29
± 5.0563
TAK-438 20 mg Once Daily
60.67
± 16.499
TAK-438 20 mg Twice Daily
42.28
± 9.1174
Tmax: Time to Reach the Maximum Plasma Concentration (Cmax) for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 1Primary· Day 1 pre-dose and at multiple timepoints (up to 48 hours) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.750
1.00 – 4.02
TAK-438 20 mg Once Daily
2.000
0.750 – 4.00
TAK-438 20 mg Twice Daily
2.500
0.750 – 4.00
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.500
0.750 – 2.00
TAK-438 20 mg Once Daily
1.500
0.750 – 3.00
TAK-438 20 mg Twice Daily
2.000
1.00 – 4.00
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
4.010
3.00 – 10.0
TAK-438 20 mg Once Daily
6.000
3.00 – 10.0
TAK-438 20 mg Twice Daily
10.00
3.00 – 12.0
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.750
1.00 – 2.00
TAK-438 20 mg Once Daily
2.000
1.50 – 3.00
TAK-438 20 mg Twice Daily
2.000
1.50 – 4.00
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.500
1.00 – 2.00
TAK-438 20 mg Once Daily
1.500
1.50 – 3.00
TAK-438 20 mg Twice Daily
2.000
1.50 – 3.00
AUC∞: Area Under the Plasma Concentration-time Curve From Time 0 to Infinity for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 1Primary· Day 1 pre-dose and at multiple timepoints (up to 48 hours) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
84.38
± 29.197
TAK-438 20 mg Once Daily
188.1
± 43.066
TAK-438 20 mg Twice Daily
226.8
± 67.128
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
305.7
± 88.227
TAK-438 20 mg Once Daily
617.2
± 213.56
TAK-438 20 mg Twice Daily
578.7
± 144.15
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
52.97
± 22.843
TAK-438 20 mg Once Daily
106.3
± 74.306
TAK-438 20 mg Twice Daily
117.8
± 41.170
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
92.83
± 34.769
TAK-438 20 mg Once Daily
178.7
± 64.779
TAK-438 20 mg Twice Daily
193.7
± 56.808
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
132.5
± 44.602
TAK-438 20 mg Once Daily
307.5
± 89.884
TAK-438 20 mg Twice Daily
240.8
± 82.555
AUCτ: Area Under the Plasma Concentration-time Curve From Time 0 to Tau Over the Dosing Interval for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 1Primary· Day 1 pre-dose and at multiple timepoints (up to 48 hours) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
74.91
± 24.835
TAK-438 20 mg Once Daily
168.6
± 37.455
TAK-438 20 mg Twice Daily
154.8
± 38.920
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
251.4
± 77.758
TAK-438 20 mg Once Daily
528.8
± 182.62
TAK-438 20 mg Twice Daily
344.1
± 91.089
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
31.77
± 18.646
TAK-438 20 mg Once Daily
79.07
± 56.206
TAK-438 20 mg Twice Daily
41.55
± 19.189
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
87.98
± 31.136
TAK-438 20 mg Once Daily
169.2
± 59.474
TAK-438 20 mg Twice Daily
149.1
± 36.714
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
127.1
± 43.648
TAK-438 20 mg Once Daily
296.0
± 86.359
TAK-438 20 mg Twice Daily
192.8
± 57.176
T1/2z: Terminal Disposition Half-life for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 1Primary· Day 1 pre-dose and at multiple timepoints (up to 48 hours) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
7.879
± 1.2352
TAK-438 20 mg Once Daily
6.996
± 1.0110
TAK-438 20 mg Twice Daily
7.116
± 0.71638
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
10.82
± 4.0923
TAK-438 20 mg Once Daily
8.256
± 1.2964
TAK-438 20 mg Twice Daily
8.385
± 0.73316
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
10.52
± 4.3311
TAK-438 20 mg Once Daily
10.37
± 2.9973
TAK-438 20 mg Twice Daily
12.29
± 4.0538
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
6.695
± 1.3786
TAK-438 20 mg Once Daily
6.335
± 1.1833
TAK-438 20 mg Twice Daily
6.791
± 0.89228
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
4.753
± 2.4430
TAK-438 20 mg Once Daily
5.698
± 1.2625
TAK-438 20 mg Twice Daily
5.521
± 2.2225
Cmax,ss: Maximum Observed Plasma Concentration, at Steady State for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 9Primary· Day 9 pre-dose and at multiple timepoints (up to 24 hours for TAK-483 10 mg once daily and 20 mg once daily; up to 12 hours for TAK-438 20 mg twice daily) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
11.01
± 3.4863
TAK-438 20 mg Once Daily
23.43
± 6.1433
TAK-438 20 mg Twice Daily
37.88
± 10.910
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
43.39
± 9.6528
TAK-438 20 mg Once Daily
79.85
± 22.119
TAK-438 20 mg Twice Daily
59.55
± 15.512
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
3.558
± 1.4983
TAK-438 20 mg Once Daily
6.554
± 2.6078
TAK-438 20 mg Twice Daily
9.174
± 2.8376
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
16.62
± 4.1919
TAK-438 20 mg Once Daily
30.15
± 7.3228
TAK-438 20 mg Twice Daily
33.01
± 6.1638
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
25.33
± 3.6619
TAK-438 20 mg Once Daily
54.08
± 13.927
TAK-438 20 mg Twice Daily
39.74
± 7.1405
Tmax, ss: Time to Reach the Maximum Plasma Concentration (Cmax) at Steady State for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 9Primary· Day 9 pre-dose and at multiple timepoints (up to 24 hours for TAK-483 10 mg once daily and 20 mg once daily; up to 12 hours for TAK-438 20 mg twice daily) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.500
0.750 – 3.02
TAK-438 20 mg Once Daily
2.000
0.750 – 3.00
TAK-438 20 mg Twice Daily
3.000
0.750 – 4.00
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.500
0.750 – 2.02
TAK-438 20 mg Once Daily
1.000
0.750 – 2.00
TAK-438 20 mg Twice Daily
2.500
1.00 – 10.0
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
4.000
3.00 – 6.00
TAK-438 20 mg Once Daily
3.000
3.00 – 10.0
TAK-438 20 mg Twice Daily
3.500
0.00 – 10.0
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.750
1.00 – 3.00
TAK-438 20 mg Once Daily
2.000
1.50 – 3.00
TAK-438 20 mg Twice Daily
3.000
1.50 – 4.00
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
2.000
1.00 – 3.00
TAK-438 20 mg Once Daily
1.500
1.50 – 2.00
TAK-438 20 mg Twice Daily
3.000
1.50 – 4.00
AUCτ,ss: Area Under the Plasma Concentration-time Curve During a Dosing Interval, at Steady State for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 9Primary· Day 9 pre-dose and at multiple timepoints (up to 24 hours for TAK-483 10 mg once daily and 20 mg once daily; up to 12 hours for TAK-438 20 mg twice daily) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
93.90
± 28.053
TAK-438 20 mg Once Daily
212.7
± 57.214
TAK-438 20 mg Twice Daily
273.4
± 71.830
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
285.5
± 77.884
TAK-438 20 mg Once Daily
581.1
± 198.14
TAK-438 20 mg Twice Daily
435.3
± 92.064
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
46.31
± 24.298
TAK-438 20 mg Once Daily
105.5
± 51.688
TAK-438 20 mg Twice Daily
100.4
± 27.966
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
95.94
± 29.719
TAK-438 20 mg Once Daily
194.6
± 53.749
TAK-438 20 mg Twice Daily
222.6
± 49.670
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
117.1
± 37.489
TAK-438 20 mg Once Daily
256.1
± 62.786
TAK-438 20 mg Twice Daily
225.7
± 52.675
Aet: Total Amount of Drug Excreted in Urine From Time 0 to Time T for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 1Primary· Day 1 pre-dose and at multiple timepoints (up to 48 hours) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
448.5
± 159.06
TAK-438 20 mg Once Daily
890.3
± 243.24
TAK-438 20 mg Twice Daily
1478
± 405.32
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
176.6
± 79.813
TAK-438 20 mg Once Daily
253.1
± 118.69
TAK-438 20 mg Twice Daily
211.2
± 124.21
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Twice Daily
0.000
± 0.0000
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Twice Daily
0.5120
± 1.6191
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
205.4
± 61.587
TAK-438 20 mg Once Daily
422.1
± 143.24
TAK-438 20 mg Twice Daily
387.1
± 142.06
Fe,t: Fraction of Drug Excreted in Urine From Time 0 to Time t for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 1Primary· Day 1 pre-dose and at multiple timepoints (up to 48 hours) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
4.485
± 1.5906
TAK-438 20 mg Once Daily
4.448
± 1.2093
TAK-438 20 mg Twice Daily
7.399
± 2.0335
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.760
± 0.79678
TAK-438 20 mg Once Daily
1.262
± 0.59122
TAK-438 20 mg Twice Daily
1.053
± 0.61992
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Twice Daily
0.000
± 0.0000
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Twice Daily
0.002460
± 0.0077792
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.609
± 0.48258
TAK-438 20 mg Once Daily
1.650
± 0.56108
TAK-438 20 mg Twice Daily
1.513
± 0.55536
CLr: Renal Clearance for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 1Primary· Day 1 pre-dose and at multiple timepoints (up to 48 hours) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
5.443
± 1.0398
TAK-438 20 mg Once Daily
4.922
± 1.4362
TAK-438 20 mg Twice Daily
6.733
± 1.3109
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.6235
± 0.16437
TAK-438 20 mg Once Daily
0.4465
± 0.24193
TAK-438 20 mg Twice Daily
0.3753
± 0.19679
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Twice Daily
0.000
± 0.0000
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Twice Daily
0.001820
± 0.0057553
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
1.748
± 0.65948
TAK-438 20 mg Once Daily
1.527
± 0.77444
TAK-438 20 mg Twice Daily
1.707
± 0.47416
Aeτ: Amount of Drug Excreted in Urine During a Dosing Interval for TAK-438F and Its Metabolites M-I, M-II, M-III and M-IV-Sul on Day 9Primary· Day 9 pre-dose and at multiple timepoints (up to 24 hours for TAK-483 10 mg once daily and 20 mg once daily; up to 12 hours for TAK-438 20 mg twice daily) post-dose
TAK-438F
Group
Value
95% CI
TAK-438 10 mg Once Daily
437.7
± 121.93
TAK-438 20 mg Once Daily
859.9
± 155.66
TAK-438 20 mg Twice Daily
1327
± 274.04
M-I
Group
Value
95% CI
TAK-438 10 mg Once Daily
224.3
± 79.531
TAK-438 20 mg Once Daily
354.1
± 165.88
TAK-438 20 mg Twice Daily
340.9
± 181.71
M-II
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Twice Daily
0.000
± 0.0000
M-III
Group
Value
95% CI
TAK-438 10 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Once Daily
0.000
± 0.0000
TAK-438 20 mg Twice Daily
0.000
± 0.0000
M-IV-Sul
Group
Value
95% CI
TAK-438 10 mg Once Daily
205.2
± 52.172
TAK-438 20 mg Once Daily
390.7
± 99.477
TAK-438 20 mg Twice Daily
446.4
± 139.39
Adverse events — posted to ClinicalTrials.gov
Time frame: Treatment-emergent adverse events are adverse events that started after the first dose of study drug up to follow-up (Day 1 up to Day 18).
Reporting threshold: 0%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
The purpose of this study is to determine the pharmacokinetics (PK) of TAK-438 in healthy adult Chinese participants after both single and multiple dose administration.
Publications & conference data
1 peer-reviewed publication reference this trial (live from Europe PMC):
NCT03808493 — A Bioequivalence (BE) Study of TAK-438 Orally Disintegrating (OD) Tablet
· Phase 1
· completed
NCT03456960 — A Study to Evaluate the Bioequivalence (BE) and the Food Effect of TAK-438ASA Tablet
· Phase 1
· completed
NCT03050307 — Comparison of TAK-438 (Vonoprazan) to Lansoprazole in the Treatment of Gastric Ulcer Participants With or Without Helico
· Phase 3
· completed
NCT03050359 — Comparison of TAK-438 (Vonoprazan) to Lansoprazole in the Treatment of Duodenal Ulcer Participants With or Without Helic
· Phase 3
· completed
NCT02892409 — TAK-438 Bismuth Drug Interaction Study
· Phase 1
· completed
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Takeda
Last refreshed: 30 January 2019
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT03085836.