Encapsulated Juice Powder Concentrate for Preventing Common Cold Symptoms
NCT ID: NCT00778648
Last Updated: 2010-10-05
Study Results
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View full resultsBasic Information
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COMPLETED
NA
543 participants
INTERVENTIONAL
2008-09-30
2009-07-31
Brief Summary
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Detailed Description
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Common cold is caused by a variety of viruses, with rhinoviruses and corona viruses as the most common. There is currently no treatment for common cold, thus therapy is focussed on symptom relief only. Prevention strategies for common cold include lifestyle measures such as avoiding infected people and regular hand washing during cold season. Dietary supplements including herbs and vitamins have been suggested as preventive strategies for common cold.
Juice Plus+® is a dietary supplement composed primarily of juice powder concentrate and pulp from fruits and vegetables. It contains several antioxidants including vitamin C, vitamin E, beta-carotene and folate. One randomized study reported reduction in work days lost to illness in the Juice Plus+® group compared to the placebo group. However, the clinical benefit for preventing common cold symptoms has not yet been tested in a large adult population.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
PREVENTION
QUADRUPLE
Study Groups
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Juice Plus
Juice Plus
Juice Plus+® is a dietary supplement from concentrated fruits (apple, orange, pineapple,cranberry, cherry (acerola), papaya and peach) and vegetables (carrot, parsley, beet, broccoli, kale, cabbage, spinach, and tomato).
Subjects will take four capsules of Juice Plus+® daily.
Placebo
Placebo
Four capsules of placebo daily.
Interventions
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Juice Plus
Juice Plus+® is a dietary supplement from concentrated fruits (apple, orange, pineapple,cranberry, cherry (acerola), papaya and peach) and vegetables (carrot, parsley, beet, broccoli, kale, cabbage, spinach, and tomato).
Subjects will take four capsules of Juice Plus+® daily.
Placebo
Four capsules of placebo daily.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Able and willing to take the active or placebo capsules over the whole study period.
* Health care professionals with essential patient contact (physicians, nurses, physiotherapists, etc) in Berlin, Germany.
* Written informed consent.
Exclusion Criteria
* Refusal to stop intake of additional vitamin supplements during study.
* Pregnancy or Lactation.
* Alcohol addiction, drug abuse or any other condition considered by the investigator to interfere with study procedures.
* Language limitations regarding interviews and questionnaires.
18 Years
65 Years
ALL
Yes
Sponsors
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NSA, Collierville, TN, USA
UNKNOWN
Charite University, Berlin, Germany
OTHER
Responsible Party
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Charite University Medical Center
Principal Investigators
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Stefan N. Willich, Prof
Role: PRINCIPAL_INVESTIGATOR
Institute for Social Medicine, Epidemiology & Health Economics
Locations
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Institute for Social medicine, Epidemiology & Health Economics
Berlin, State of Berlin, Germany
Countries
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References
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Lamprecht M, Oettl K, Schwaberger G, Hofmann P, Greilberger JF. Several indicators of oxidative stress, immunity, and illness improved in trained men consuming an encapsulated juice powder concentrate for 28 weeks. J Nutr. 2007 Dec;137(12):2737-41. doi: 10.1093/jn/137.12.2737.
Other Identifiers
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JPCC
Identifier Type: -
Identifier Source: org_study_id