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Study Examing The Effect Of Omeprazole On Safety, Tolerability And How The Body Processes An Experimental Drug

A Phase 1, Open-Label, Fixed Sequence Study To Evaluate The Effect Of Multiple Dose Administration Of Omeprazole On The Single Dose Pharmacokinetics Of CP-945,598 In Healthy Overweight And Obese Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00644839
Enrollment
28
Registered
2008-03-27
Start date
2008-04-30
Completion date
2008-07-31
Last updated
2009-08-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity

Brief summary

Experiment in the test tube indicated that CP-945,598 becomes less soluble with increase of pH (less acidity). Changes in stomach acid levels may affect the solubility of CP-945,598, therefore, alters its availability in the blood. Omeprazole decreases acid levels in stomach. This study will compare the time course of drug concentrations in the body, safety, and tolerability of CP-945,598 given with and without omeprazole.

Interventions

Administration of CP-945,598 alone in period 1

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy * Body Mass Index (BMI) of 26.6 to 40.5 kg/m2.

Exclusion criteria

* Non-prescribed use of drugs or abuse of recreational drugs; recent treatment with experimental drugs or herbal experiments; EKG and blood pressure measurements falling outside of protocol-specified limits; history of regular alcohol or tobacco use exceeding protocol-specified limits; medically important health conditions; recent use of prescription or non-prescription medications.

Design outcomes

Primary

MeasureTime frame
Measurement of drug concentrations in serum from blood samples collected at various times after first single dose of CP-945,598 on days 1-6, 8, 15.1 day
Measurement of drug concentrations in serum from blood samples collected at 4 days before given omeprazole, and after second single dose of CP-945,598 on days 1-6, 8.1 day

Secondary

MeasureTime frame
ECGs on the first and last day of the study2 days
Saftey laboratory tests (chemistry, hematology, urinalysis) on the first and last day of the study2 days
Vital signs (blood pressure, heart rate and respiratory rate) on the first and last day of the study2 days

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026