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Completed

NCT Number: NCT04339283

Effect of Standardized Hibiscus Sabdariffa Tea in Seemingly Healthy Human Volunteers

Hibiscus sabdariffa tea is commonly used all over the world by healthy individual but the tea is also employed by patients in the management of chronic diseases such as hypertension diabetes, high cholesterol, liver disease etc. Several studies in humans and animal have proved the efficacy of Hibiscus sabdariffa tea in lowering blood pressure, blood glucose level and serum total cholesterol. But no study exists on the effect of daily consumption of this tea on blood pressure, blood glucose, total cholesterol and other biochemical and hematological parameters in healthy humans. Hence this study.

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Key information

Age range

18 year–40 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Department of Clinical Pharmacy Laboratory, University of Ibadan

Ibadan, Oyo State, 200284, Nigeria

About this study

Several studies have been carried out on the effect of the water beverage of Hibiscus sabdariffa, most focus on hypertensive patients, diabetic patients and obese patient and some studies investigated the hypolipidemic a effect of the water beverage of Hibiscus sabdariffa as well as its effect on haematological parameters but mice were used for these studies. Little or no investigation has been done to assess the safety of daily consumption of this water beverage of hibiscus sabdariffa on humans.

Hence, this study aims at investigating the safety in the daily consumption of Zobo in humans, monitoring lipid profile, blood pressure, blood glucose, body mass index and haematological parameters such as haematocrit, haemoglobin, total white blood cells and also hepatic indices.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Healthy volunteers only
  • Not on any medications or herbs
  • No disease condition
  • Females not pregnant
  • Non-smokers

Exclusion criteria

  • Below 18yrs or above 40 years
  • presence of chronic disease
  • on medications pregnant females

Treatment and study plan

Standardized Hibiscus sabdariffa tea

Dietary Supplement

Daily consumption of Standardized Hibiscus sabdariffa tea

Primary outcomes

  1. Change from Baseline Systolic Blood Pressure and Diastolic Blood Pressure on the 14th day

    Time frame: 14 days

    Blood pressure was measured in mmHg at baseline and on the 14th day of study with the aid of Omron Digital Blood pressure monitor

  2. Change from Baseline Systolic Blood Pressure and Diastolic Blood Pressure on the 28th day

    Time frame: 28 days

    Systolic and Diastolic Blood pressures were measured in mmHg at baseline and on the 28th day of study with the aid of Omron Digital Blood pressure monitor

  3. Change from Baseline Fasting Blood Glucose level on the 14th day

    Time frame: 14 days

    Fating blood glucose level was measured with AccuChek Active glucometer in mg/dL on the 14th day of study

  4. Change from Baseline Fasting Blood Glucose level on the 28th day

    Time frame: 28 days

    Fating blood glucose level was measured with AccuChek Active glucometer in mg/dL on the 28th day of study

  5. Change from Baseline Total Serum Cholesterol on the 14th day

    Time frame: 14 days

    Total Serum Cholesterol was analysed with Randox kit and measured in mg/dL on the 14th day

  6. Change from Baseline Total Serum Cholesterol on the 28th day

    Time frame: 28 days

    Total Serum Cholesterol was analysed with Randox kit and measured in mg/dL on the 28th day

  7. Change from Baseline Triglyceride on the 14th day

    Time frame: 14 days

    Triglyceride was analysed with Randox kit and measured in mg/dL on the 14th day

  8. Change from Baseline Triglyceride on the 28th day

    Time frame: 28 days

    Triglyceride was analysed with Randox kit and measured in mg/dL on the 28th day

  9. Change from Baseline High Density Lipoprotein Cholesterol on the 14th day

    Time frame: 14 days

    High Density Lipoprotein Cholesterol was analysed with Randox kit and measured in mg/dL on the 14th day

  10. Change from Baseline High Density Lipoprotein Cholesterol on the 28th day

    Time frame: 28 days

    High Density Lipoprotein Cholesterol was analysed with Randox kit and measured in mg/dL on the 28th day

  11. Change from Baseline Low Density Lipoprotein Cholesterol on the 14th day

    Time frame: 14 days

    Low Density Lipoprotein Cholesterol was analysed with Randox kit and measured in mg/dL on the 14th day

  12. Change from Baseline Low Density Lipoprotein Cholesterol on the 28th day

    Time frame: 28 days

    Low Density Lipoprotein Cholesterol was analysed with Randox kit and measured in mg/dL on the 28th day

  13. Change form Baseline Alanine Aminotransferase on the 14th day

    Time frame: 14 days

    Alanine aminotransferase was analysed with Randox kit and measured in U/L on the 14th day

  14. Change form Baseline Alanine Aminotransferase on the 28th day

    Time frame: 28 days

    Alanine aminotransferase was analysed with Randox kit and measured in U/L on the 28th day

  15. Change form Baseline Aspartate Aminotransferase on the 14th day

    Time frame: 14 days

    Aspartate aminotransferase was analysed with Randox kit and measured in U/L on the 14th day

  16. Change form Baseline Aspartate Aminotransferase on the 28th day

    Time frame: 28 days

    Aspartate aminotransferase was analysed with Randox kit and measured in U/L on the 28th day

  17. Change form Baseline Blood Urea Nitrogen on the 14th day

    Time frame: 14 days

    Blood Urea Nitrogen was analysed with Randox kit and measured in mg/dL on the 14th day

  18. Change form Baseline Blood Urea Nitrogen on the 28th day

    Time frame: 28 days

    Blood Urea Nitrogen was analysed with Randox kit and measured in mg/dL on the 28th day

  19. Change form Baseline Serum Creatinine on the 14th day

    Time frame: 14 days

    Serum Creatinine was analysed with Randox kit and measured in mg/dL on the 14th day

  20. Change form Baseline Serum Creatinine on the 28th day

    Time frame: 28 days

    Serum Creatinine was analysed with Randox kit and measured in mg/dL on the 28th day

  21. Change form Baseline Albumin on the 14th day

    Time frame: 14 days

    Albumin was analysed with Randox kit and measured in g/dL on the 14th day

  22. Change form Baseline Albumin on the 28th day

    Time frame: 28 days

    Albumin was analysed with Randox kit and measured in g/dL on the 28th day

  23. Change form Baseline Hematocrit on the 14th day

    Time frame: 14 days

    Hematocrit was analysed in the laboratory and measured in % on the 14th day

  24. Change form Baseline Hematocrit on the 28th day

    Time frame: 28 days

    Hematocrit was analysed in the laboratory and measured in % on the 28th day

  25. Change form Baseline Hemoglobin on the 14th day

    Time frame: 14 days

    Hemoglobin was analysed in the laboratory and measured in g/dL on the 14th day

  26. Change form Baseline Hemoglobin on the 28th day

    Time frame: 28 days

    Hemoglobin was analysed in the laboratory and measured in g/dL on the 28th day

  27. Change form Baseline White Blood Cell count on the 14th day

    Time frame: 14 days

    White Blood Cell counts was analysed in the laboratory and measured in 10*3/ µL on the 14th day

  28. Change form Baseline White Blood Cell count on the 28th day

    Time frame: 28 days

    White Blood Cell counts was analysed in the laboratory and measured in 10*3/ µL on the 28th day

  29. Change form Baseline Total Protein on the 14th day

    Time frame: 14 days

    Total Protein was analysed in the laboratory and measured in g/dL on the 14th day

  30. Change form Baseline Total Protein on the 28th day

    Time frame: 28 days

    Total Protein was analysed in the laboratory and measured in g/dL on the 28th day

  31. Change form Baseline Pulse on the 14th day

    Time frame: 14 days

    Pulse was measured with the BP monitor in /min on the 14th day

  32. Change form Baseline Pulse on the 28th day

    Time frame: 28 days

    Pulse was measured with the BP monitor in /min on the 28th day

Secondary outcomes

  1. Change from Baseline Body Mass Index on the 14th day

    Time frame: 14 day

    Body mass index measure in kg/sq m was calculated from a measure of weight in kg and height in meters on the 14 day

  2. Change from Baseline Body Mass Index on the 28th day

    Time frame: 28 day

    Body mass index measure in kg/sq m was calculated from a measure of weight in kg and height in meters on the 14 day

Sponsors and collaborators

Lead sponsor

University of Ibadan

Other

Registry information

Official study title

Standardized Hibiscus Sabdariffa Linn Tea, Potential Nutraceutical Candidate for the Prevention of Hypertension, Diabetes, and Hypercholesterolemia - a Pilot Study

Important dates

Study start
2019
Primary completion
2019
Study completion
2019
First posted
Apr 9, 2020
Registry last updated
Apr 9, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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