Safety and Efficacy of Oral Supplementation With a Black Pepper Extract in Apparently Healthy Men and Women
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Waist Circumference
- Sponsor
- The Center for Applied Health Sciences, LLC
- Enrollment
- 86
- Locations
- 1
- Primary Endpoint
- waist circumference
- Status
- Completed
- Last Updated
- 2 years ago
Overview
Brief Summary
This study is a randomized, placebo-controlled, double-blind, two-arm trial of N=94 apparently healthy men and women to be recruited at a single investigational center in Northeast Ohio. Subjects will attend three study visits. During Visit 1, subjects will be screened for participation (i.e., medical history, physical exam, routine blood work, background baseline diet). Over the next 12 weeks, subjects will attend Visits 2 (baseline) and 3 (week 12), wherein assessments of body weight, waist circumference, urinary ketones, serum glucose, insulin, liver enzymes as well as other biomarkers of metabolic health, quality of life (SF-36 questionnaire), and various visual analog scales (VAS) for appetite, satiety, and cravings will be made.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Provide voluntary signed and dated informed consent.
- •Be in good health as determined by medical history and routine blood chemistries.
- •Age between the ages of 21 and 65 (inclusive).
- •Body Mass Index of 25-34.99 (inclusive).
- •Body weight of at least 120 pounds.
- •Normotensive (seated, resting systolic blood pressure \<140 mm Hg and diastolic blood pressure \< 90 mm Hg. If the first measurement is slightly elevated above these limits, the subject will be given a brief (5 minute) rest period, and two more measurements will be taken. The average of all three measurements will be used to determine eligibility.
- •Normal seated, resting heart rate (\<90 per minute).
- •Willing to duplicate their previous 24-hour diet, refrain from caffeine for 12 hr, abstain from exercise for 24 hr, and fast for 10 hours prior to each laboratory visit.
Exclusion Criteria
- •History of unstable or new-onset cardiovascular or cardiorespiratory disease.
- •Individuals diagnosed with diabetes or other endocrine disorder.
- •Fasting blood sugar of \> 126 mg/dL OR HgA1c of \> 6.5%.
- •History of use of medications or dietary supplements known to affect glycemia or insulinemia.
- •Current use of amiodarone, anti-retroviral agents, corticosteroids, methotrexate, tamoxifen, valproate, amitriptyline (Elavil), codeine, desipramine (Norpramin), flecainide (Tambocor), haloperidol (Haldol), imipramine (Tofranil), metoprolol (Lopressor, Toprol XL), ondansetron (Zofran), paroxetine (Paxil), risperidone (Risperdal), tramadol (Ultram), venlafaxine (Effexor), cyclosporine, lithium, chlorzoxazone, theophylline, and bufuralol, cyclophosphamide, ifosfamide, barbiturates, bromobenzene, lovastatin (Mevacor), ketoconazole (Nizoral), itraconazole (Sporanox), fexofenadine (Allegra), triazolam (Halcion), glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), etoposide, paclitaxel, vinblastine, vincristine, vindesine, amprenavir, indinavir, nelfinavir, saquinavir, cimetidine, ranitidine, diltiazem, verapamil, digoxin, erythromycin, cisapride (Propulsid),, loperamide (Imodium), quinidine, aspirin, clopidogrel (Plavix), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, ticlopidine (Ticlid), warfarin (Coumadin), nevirapine, Pentobarbital (Nembutal), Phenytoin (Dilantin), Propranolol (Inderal), Rifampin, Amoxicillin (Amoxil, Trimox), Carbamazepine (Tegretol), Cefotaxime (Claforan), midazolam, diclofenac.
- •History of hyperparathyroidism or an untreated thyroid disease.
- •History of nephrotic syndrome or renal disease.
- •History of alcohol abuse within the past year.
- •History of malignancy in the previous 5 years except for non-melanoma skin cancer (basal cell cancer or squamous cell cancer of the skin).
- •Prior gastrointestinal bypass surgery (Lapband), etc.
Outcomes
Primary Outcomes
waist circumference
Time Frame: Change from baseline to week 12
measurement of waist circumference in centimeters
triglycerides
Time Frame: Change from baseline to week 12
measurement of triglycerides in blood
Secondary Outcomes
- plasma free fatty acids(Change from baseline to week 12)
- body weight(Change from baseline to week 12)
- Body mass index(Change from baseline to week 12)
- urinary ketones(Change from baseline to week 12)
- liver enzymes(Change from baseline to week 12)