Melatonin Supplements for Improving Sleep in Individuals With Hypertension
| Status: | Completed |
|---|---|
| Conditions: | High Blood Pressure (Hypertension), Insomnia Sleep Studies |
| Therapuetic Areas: | Cardiology / Vascular Diseases, Psychiatry / Psychology |
| Healthy: | No |
| Age Range: | 35 - 65 |
| Updated: | 11/16/2017 |
| Start Date: | October 2005 |
| End Date: | August 2010 |
Melatonin Supplementation in Hypertensive Patients
This study will evaluate the effectiveness of treatment with melatonin supplements in
improving sleep in individuals with high blood pressure who are taking beta-blockers.
improving sleep in individuals with high blood pressure who are taking beta-blockers.
Hypertension, or high blood pressure, is a condition in which an individual's blood pressure
is higher than the normal level. It is estimated that one in three individuals in the United
States has high blood pressure, though many do not know it because there are usually no
symptoms. Uncontrolled hypertension may lead to stroke, heart attack, heart failure, or
kidney failure. Beta-blockers are one class of drugs that have been developed to help lower
blood pressure, and thereby decrease the risk for these serious problems. Beta-blockers also
lower the levels of melatonin, a hormone that has a sleep-promoting effect. Many individuals
who take beta-blockers for hypertension complain that they have trouble sleeping, which may
be related to the beta-blockers' effect on melatonin levels. This study will evaluate the
effectiveness of treatment with melatonin supplements in improving sleep in individuals with
high blood pressure who are taking beta-blockers. In addition, the study will examine whether
the melatonin supplements aid in lowering blood pressure.
Participants in this double-blind study will be randomly assigned to receive either melatonin
supplements or placebo for the duration of the study. Participants will take part in two
inpatient phases. Each inpatient stay will last 4 days and will be separated by 3 to 4 weeks.
While in the clinic, participants' sleep patterns and core temperature will be recorded and
plasma, saliva, and urine samples will be collected. Blood pressure will be measured before
and after each inpatient stay, as well as at points during the stay. Throughout the study,
participants' activity will be monitored by an accelerometer worn around the wrist.
is higher than the normal level. It is estimated that one in three individuals in the United
States has high blood pressure, though many do not know it because there are usually no
symptoms. Uncontrolled hypertension may lead to stroke, heart attack, heart failure, or
kidney failure. Beta-blockers are one class of drugs that have been developed to help lower
blood pressure, and thereby decrease the risk for these serious problems. Beta-blockers also
lower the levels of melatonin, a hormone that has a sleep-promoting effect. Many individuals
who take beta-blockers for hypertension complain that they have trouble sleeping, which may
be related to the beta-blockers' effect on melatonin levels. This study will evaluate the
effectiveness of treatment with melatonin supplements in improving sleep in individuals with
high blood pressure who are taking beta-blockers. In addition, the study will examine whether
the melatonin supplements aid in lowering blood pressure.
Participants in this double-blind study will be randomly assigned to receive either melatonin
supplements or placebo for the duration of the study. Participants will take part in two
inpatient phases. Each inpatient stay will last 4 days and will be separated by 3 to 4 weeks.
While in the clinic, participants' sleep patterns and core temperature will be recorded and
plasma, saliva, and urine samples will be collected. Blood pressure will be measured before
and after each inpatient stay, as well as at points during the stay. Throughout the study,
participants' activity will be monitored by an accelerometer worn around the wrist.
Inclusion Criteria:
- Diagnosed with uncomplicated hypertension
- Currently being treated with Atenolol (a beta-blocker)
Exclusion Criteria:
- History of medical illness other than essential hypertension
- Personal or family history of psychiatric illness
- Current use of any medication other than anti-hypertensive drugs
- Any recent travel across time zones
- History of working various shifts on an irregular basis
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