(HealthDay News) -- Here are the latest clinical trials, courtesy of CenterWatch:

Hypertension (High Blood Pressure)

This study hopes to learn that if patient's blood pressure isn't lowered while taking Diovan HCT, then will different doses of Diovan HCT or Diovan HCT plus another blood pressure medication called Norvasc help lower the patient's blood pressure?

Participants must meet the following criteria: male or female patients 18 to 75 years of age and patients with a doctor's diagnosis of hypertension or high blood pressure.

The research sites are located throughout the United States.

More Information

Please see http://www.centerwatch.com/patient/studies/cat85.html.

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Cervical Intraepithelial Neoplasia

This research study is being done to evaluate the effectiveness and safety of EM-1421. The drug is being tested as an anti-cancer treatment.

Subjects who meet all the following criteria will be considered eligible for participation in the study: male or female subjects above or below 18 years of age and subjects with documented evidence of cancer with clinically evaluable disease.

The research sites are in New York and Tennessee.

More Information

Please see http://www.centerwatch.com/patient/studies/cat396.html.

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Heartburn

If you regularly experience the burning and discomfort of heartburn, you may qualify for enrollment in a research study to test an investigational drug.

You qualify if you are over the age of 18, have experienced heartburn regularly over the past month, have had some relief from antacids or other non-prescription heartburn medications and are available to attend four study visits over a five week period.

The research site is in Longmont, Col.

More Information

Please see http://www.centerwatch.com/patient/studies/cat175.html.

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