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ObesityYGDNCT02185638

Appetite Suppression Effects of an Herbal Combination of Yerba maté, Guarana, Damiana (YGD), and 12 Other Herbal Components, Versus YGD Supplementation Alone

A study testing Appetite suppressant properties of YGD and A20-50 in people with Obesity, run by University of Copenhagen at 1 site in Denmark.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Background: Supplementation with the combination of Yerba maté, guarana and damiana (YGD) has been found to slow gastric emptying by 15 to 58%, and to induce a substantial weight loss over 45 days without changes in diet. Read more about this study

Who is it for?
Ages 18 to 45 years, women onlyHealthy volunteers can take part
Conditions the study is for
Obesity
What is being tested?
Appetite suppressant properties of YGD and A20-50
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
19 participants
Where
1 siteDenmark
Study dates
Dec 2008to Jun 2009
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 45 years
  • Women only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy,
  • BMI: 27-32 kg/m2,
  • Weight stable (within +/- 3 kg) two months prior to study inclusion,
  • Non-smoking,
  • Nonathletic (< 10 h hard physical activity),

Who cannot join

  • BMI <27 and > 32 kg/m2,
  • Change in smoking status,
  • Daily or frequent use of medication,
  • Suffering from metabolic diseases,
  • Suffering from psychiatric diseases,
  • Suffering from any other clinical condition, which would make the subject unfit to participate in the study,
Show all 9Show fewer
  • Hemoglobin < 7.0 mmol/l.
  • alcohol and drug abuse
  • blood donation, 3mo prior to the present study and during study participation

Trial locations and contacts

1 site in 1 country.

Denmark1 site
  • Department Of Human Nutrition, Faculty of Science, University of Copenhagen

    Frederiksberg, 1958

Other trials in Denmark

About this study

Background:

Supplementation with the combination of Yerba maté, guarana and damiana (YGD) has been found to slow gastric emptying by 15 to 58%, and to induce a substantial weight loss over 45 days without changes in diet. Enhanced gastric emptying rate has been shown to reduce the satiating effect of food and may thereby promote obesity. Yerba maté and guarana are known to contain large amounts of caffeine, resins, saponins and tannins, whereas damiana contains ethereal oils, tannins and resins. Caffeine belongs to a class of compounds called methylxanthines and epidemiological studies suggest that caffeine might possess weight reducing properties. The sympathomimetic properties of caffeine act to some extent through α- and β-adrenoreceptors, but most of the sympathoadrenergic stimulation caused by caffeine (even in very small doses) acts through the dual ability to antagonise adenosine and to inhibit the activity of cellular cyclic nucleotide phosphodiesterase. Stimulation of the sympathetic nervous system can cause suppression of hunger, enhance satiety and increase of energy expenditure covered in part by increased fat oxidation.

Read more

Aim:

To evaluate the effect of YGD combination or Akavar 20-50 (A20-50) compared with placebo on:

  1. Acute change in 4-h subjective appetite sensations
  2. Acute change in ad libitum energy intake (EI) 30 minutes post intake
  3. Acute change in serum glucose, insulin, ghrelin and other appetite-regulating hormones (glucagon-like peptide-1 (GLP-1), cholecystokinin (CCK))

Subjects:

19 , healthy, premenopausal, overweight to obese (BMI between 27 and 32 kg/m2) women(age: 18 to 45 years).

Method:

The study is designed as a 3-way crossover, randomized, placebo controlled, double-blind study.

The bioactive components will be administered as capsules containing YGD or A20-50. The placebo capsules will contain rice flower. The subjects will undergo following treatments:

  1. YGD capsules
  2. A20-50 capsules
  3. Placebo capsules

On each test day the subjects will be instructed to rest in a supine position for 15 minutes before dual measures of blood pressure and HR. A blood sample will be taken (baseline). The subject's appetite sensations will also be assessed by visual analogue scales (VAS) prior to intake of the test compound. Immediately hereafter the subjects will be served the first dose of the test compound. Blood samples will be taken at 15 and 30 minutes (time 0) post test compound. After 30 minutes post test compound the subjects will be given a standard breakfast (2.5 MJ = 598 kcal). Additional blood samples will be taken 15 minutes 30, 45, 60, 90, 120, 150, 180 and 240 minutes post-meal, together with a VAS appetite score assessment (0, 30, 45, 60, 90, 120, 150, 180 and 240 minutes).

Immediately after the last blood collection subjects will be asked to take a second dose of the test compound. After 30 minutes the subjects will repeat one VAS score assessment and be served an ad libitum lunch.

Blood samples will be analyzed for insulin, glucose, and appetite regulating hormones such as glucagon-like peptide-1 (GLP-1), ghrelin, cholecystokinin (CCK).

Conditions
Obesity
Being tested
Appetite suppressant properties of YGD and A20-50
Keywords
obesity, herbal bioactive compounds, appetite, GLP-1, ghrelin, CCK
Medical subject headings
Obesity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Appetite suppressant properties of YGD and A20-50Other

    3-arm crossover study for investigation of the effect of herbal supplements A20-50 compared to YGD blend and placebo on subjective appetite sensations, glucose, insulin, ghrelin, GLP-1, CCK and ad libitum energy intake

Study groups in NCT02185638
Study groupRoleWhat they receive
A20-50ExperimentalA20-50 (2 capsules). Each capsule contains: Yerba Mate (Ilex paraguariensis), Guarana seed (Paullinia cupana), Magnesium Oxide , Caffeine , Damiana (Turnera microphylla), Green tea (Camellia sinensis), Ginger (Zingiber Officinale), Kola nut (Cola acuminate or nitida), Pyridoxine Hydrochloride, Tibetan Ginseng root (Rhodiola crenulata), Schisandra (Schisandra Chinensis), Jujube (Ziziphus Jujuba) , Cocoa nut (Theobroma cacao), Chinese Skullcap (Scutellaria Baicalensis), Black tea leaf (Thea sinensis), Rice flour (to fill) Dose = 2 capsules have a total of 200 mg of caffeine
Receives: Other: Appetite suppressant properties of YGD and A20-50
YGDActive comparatorYGD blend (2 capsules). Each capsule contains: Yerba Maté (leaf) , Guarana (seed) , Damiana (leaf) , Rice flour: to fill , The 2 capsules of the YGD blend contain about 40 mg xanthines (caffeine and caffeine-like stimulants).
Receives: Other: Appetite suppressant properties of YGD and A20-50
PlaceboPlacebo comparatorPlacebo (2 capsules). Each capsule contains: Rice Flour
Receives: Other: Appetite suppressant properties of YGD and A20-50

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Acute 3-h changes from baseline in subjective appetite sensations using visual analogue scales

    Assessment of subjective appetite sensations (visual analogue scales (VAS)) at time 0 (baseline - prior to the test meal) and at time 30, 45, 60, 90, 120, 150, 180 and 240 minutes post intake.

    Measured subjective appetite sensations of hunger, satiety, prospective consumption, fullness, composite appetite score.

    Measured: Measured on 3 seperate test days in a crossover design. Each test day is seperated by >4 weeks. On each test day appetite sensations are measured prior to the test compound (time 0) and 30, 45, 60, 90, 120, 150, 180 and 240 minutes post intake

Secondary outcomes (13)
  1. Acute 3-h changes from baseline in subjective sensory desires using visual analogue scales

    Assessment of subjective appetite sensations (visual analogue scales (VAS)) at time 0 (baseline - prior to the test meal) and at time 30, 45, 60, 90, 120, 150, 180 and 240 minutes post intake.

    Measured subjective sensory desires for something sweet, salty, rich in fat, or meat/fish

    Measured: Measured on 3 seperate test days in a crossover design. Each test day is seperated by >4 weeks. On each test day appetite sensations are measured prior to the test compound (time 0) and 30, 45, 60, 90, 120, 150, 180 and 240 minutes post intake

  2. Acute 3-h changes from baseline in the postprandial concentration of Ghrelin

    A venflon catheter was secured into the participants' antecubital vein, and a blood sample was taken (baseline). Immediately after the subjects were served the test compound (2 capsules). Blood samples were taken at 15 and 30 minutes after intake of the test compound (2 capsules). After 30 minutes post test compound consumption (time 0), the subjects were given a standard breakfast (2.0 MJ: bun with cheese, yoghurt, 200 ml orange juice). Additional blood samples were taken 15, 30, 45, 60, 90, 120, 150, 180 and 240 minutes post-meal

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks. Ghrelin was measured prior to the test compound (time -15 and -30 min) and to the breakfast meal (time 0) and 30, 45, 60, 90, 120, 150, 180 and 240 minutes

  3. Acute 3-h changes from baseline in the postprandial concentration of GLP-1

    A venflon catheter was secured into the participants' antecubital vein, and a blood sample was taken (baseline). Immediately after the subjects were served the test compound (2 capsules). Blood samples were taken at 15 and 30 minutes after intake of the test compound (2 capsules). After 30 minutes post test compound consumption (time 0), the subjects were given a standard breakfast (2.0 MJ: bun with cheese, yoghurt, 200 ml orange juice). Additional blood samples were taken 15, 30, 45, 60, 90, 120, 150, 180 and 240 minutes post-meal

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks. GLP-1 was measured prior to the test compound (time -15 and -30 min) and to the breakfast meal (time 0) and 30, 45, 60, 90, 120, 150, 180 and 240 minutes

  4. Acute 3-h changes from baseline in the postprandial concentration of CCK

    A venflon catheter was secured into the participants' antecubital vein, and a blood sample was taken (baseline). Immediately after the subjects were served the test compound (2 capsules). Blood samples were taken at 15 and 30 minutes after intake of the test compound (2 capsules). After 30 minutes post test compound consumption (time 0), the subjects were given a standard breakfast (2.0 MJ: bun with cheese, yoghurt, 200 ml orange juice). Additional blood samples were taken 15, 30, 45, 60, 90, 120, 150, 180 and 240 minutes post-meal

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks. CCK was measured prior to the test compound (time -15 and -30 min) and to the breakfast meal (time 0) and 30, 45, 60, 90, 120, 150, 180 and 240 minutes

  5. Acute 3-h changes from baseline in the postprandial concentration of glucose

    A venflon catheter was secured into the participants' antecubital vein, and a blood sample was taken (baseline). Immediately after the subjects were served the test compound (2 capsules). Blood samples were taken at 15 and 30 minutes after intake of the test compound (2 capsules). After 30 minutes post test compound consumption (time 0), the subjects were given a standard breakfast (2.0 MJ: bun with cheese, yoghurt, 200 ml orange juice). Additional blood samples were taken 15, 30, 45, 60, 90, 120, 150, 180 and 240 minutes post-meal

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks. Glucose was measured prior to the test compound (time -15 and -30 min) and to the breakfast meal (time 0) and 30, 45, 60, 90, 120, 150, 180 and 240 minutes

  6. Acute 3-h changes from baseline in the postprandial concentration of insulin

    A venflon catheter was secured into the participants' antecubital vein, and a blood sample was taken (baseline). Immediately after the subjects were served the test compound (2 capsules). Blood samples were taken at 15 and 30 minutes after intake of the test compound (2 capsules). After 30 minutes post test compound consumption (time 0), the subjects were given a standard breakfast (2.0 MJ: bun with cheese, yoghurt, 200 ml orange juice). Additional blood samples were taken 15, 30, 45, 60, 90, 120, 150, 180 and 240 minutes post-meal

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks. Insulin was measured prior to the test compound (time -15 and -30 min) and to the breakfast meal (time 0) and 30, 45, 60, 90, 120, 150, 180 and 240 minutes

  7. Change in ad libitum energy intake (EI)

    240 min after each test meal an ad libitum meal was served, and the total energy intake was recorded

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks. EI was measured 240 min after intake of the breakfast meal.

  8. Rating of the organoleptic quality of the ad libitum meal

    After completion of the adlibitum meal the subjects will rate the organoleptic quality of the meal by visual analogue scales (VAS) in regard to appearance, smell, taste, after-taste, and general palatability.

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks.On each test day after completion of the ad libitum meal (approximately) time 15-20 minutes post intake) subjects will rate the ad libitum meal

  9. Subjective appetite sensations (visual analogue scales) after ad libitum meal

    After completion of the ad libitum meal the subjects will rate the subjective appetite sensations by visual analogue scales (VAS) in regard to sensation of hunger, satiety, prospective consumption, fullness, composite appetite score and sensory desires to eat something sweet, salty, rich in fat, or meat/fish.

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks.After completion of the ad libitum meal subjects will rate their subjective sensation of appetite

  10. change in body weight

    body weight will be measured to the nearest 0.05 kg on a decimal scale.

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks.On each test day body weight is carried out prior to the test.

  11. change in heart rate

    heart rate were measured using an automatically inflating cuff.

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks.On each test day blood pressure and heart rate carried out prior to the test.

  12. change in blood pressure

    blood pressure were measured using an automatically inflating cuff.

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks.On each test day blood psure and heart rate carried out prior to the test.

  13. change in composition (fat mass and fat free mass)

    Body composition will be assessed by electric bioimpedance using an Animeter.

    Measured: Measured on 3 seperate test days. Each test day is seperated by >4 weeks.On each test day composition is carried out prior to the test.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Jul 2014 (estimated)
  2. Study startDec 2008
  3. Primary completionJun 2009
  4. Study completionJun 2009

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Allocation
Randomised
Intervention model
Crossover
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
19 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02185638
Sponsor's protocol ID
B258
Acronym
YGD
Status last verified
Jul 2014
First submitted
19 Jun 2012
Last updated
9 Jul 2014
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A study testing Appetite suppressant properties of YGD and A20-50 in people with Obesity, run by University of Copenhagen at 1 site in Denmark.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 9 Jul 2014. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Acute 3-h changes from baseline in subjective appetite sensations using visual analogue scales (time frame: Measured on 3 seperate test days in a crossover design. Each test day is seperated by >4 weeks. On each test day appetite sensations are measured prior to the test compound (time 0) and 30, 45, 60, 90, 120, 150, 180 and 240 minutes post intake). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Jul 2014.

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