(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

High Blood Pressure

To qualify for this study, you must be 18 or older and have been diagnosed with high blood pressure.

The research site is in Birmingham, Ala.

More information

Please see http://www.clinicalconnection.com/clinical_trials/condition/hypertension.aspx.

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Ragweed Allergy

This study will evaluate an investigational drug to treat seasonal ragweed allergy. Participants will receive the study medication and study-related care at no cost, and compensation of up to $660 is available.

The research site is in St. Louis, Mo.

More information

Please see http://www.clinicalconnection.com/clinical_trials/condition/allergies.aspx.

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Alzheimer's Disease

This study will evaluate an investigational drug for Alzheimer's disease. Symptoms include forgetfulness, loss of short term memory, repeating questions or phrases, and increased difficulty in handling daily activities.

The research site is in Portland, Ore.

More information

Please see http://www.clinicalconnection.com/clinical_trials/condition/alzheimers_disease.aspx.

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