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Amlodipine 10mg Drug Use Investigation (ENTER10)

This study has been completed.
Information provided by (Responsible Party):
Pfizer Identifier:
First received: December 1, 2010
Last updated: January 9, 2014
Last verified: January 2014
In this survey, to collect the safety and efficacy information in the subjects who have been treated with amlodipine 5mg at least 4 weeks in daily practice.

Condition Intervention Phase
Drug: Amlodipine
Phase 4

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Enhanced Dose Norvasc Treatment For Essential Hypertension In Realworld (Norvasc®10mg Drug Use Investigation)

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • The frequency of treatment related adverse events. [ Time Frame: 12 weeks ]
  • The achievement rate to Blood Pressure Goal. [ Time Frame: 12 weeks ]

Secondary Outcome Measures:
  • Treatment related unlisted adverse events in Japanese Package Insert. [ Time Frame: 12 weeks ]
  • Risk factors likely to affect the frequency of treatment related adverse events. [ Time Frame: 12 weeks ]
  • Risk factors likely to affect the efficacy. [ Time Frame: 12 weeks ]

Enrollment: 14141
Study Start Date: December 2010
Study Completion Date: November 2013
Primary Completion Date: November 2013 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Amlodipine 10mg Tablet
Subjects taking Amlodipine 10mg Tablet.
Drug: Amlodipine
Usual adult dosage is 2.5-5 mg of amlodipine given orally as a single daily dose. Dosage should be adjusted depending on the patient's symptoms. The dose can be raised up to 10 mg once daily for patients who show inadequate response.
Other Name: Norvasc

Detailed Description:
All the subjects whom an investigator prescribes Amlodipine (Norvasc®) 10mg Tablet should be registered consecutively until the number of subjects reaches target number in order to extract patients enrolled into the investigation at random.

Ages Eligible for Study:   20 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
The subjects who have been treated with amlodipine 5mg at least 4 weeks and had not achieved target BP.

Inclusion Criteria:

  • Male or female subjects who have been treated with amlodipine 5mg at least 4 weeks
  • The subjects who had not achieved target BP

Exclusion Criteria:

  • Subjects who have been prescribed amlodipine (Norvasc®) 10mg Tablet before
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01252563

Sponsors and Collaborators
Study Director: Pfizer Call Center Pfizer
  More Information

Additional Information:
Responsible Party: Pfizer Identifier: NCT01252563     History of Changes
Other Study ID Numbers: A0531097
Study First Received: December 1, 2010
Last Updated: January 9, 2014

Keywords provided by Pfizer:
Norvasc 10mg
Post Marketing surveillance

Additional relevant MeSH terms:
Vascular Diseases
Cardiovascular Diseases
Antihypertensive Agents
Calcium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Vasodilator Agents processed this record on May 24, 2017