1,654 Clinical Trials for Various Conditions
The goal of this clinical trial is to learn if a daily nutritional supplement can reduce hot flashes and other menopausal symptoms in postmenopausal women. The main questions this study aims to answer are: Does the supplement reduce the number and severity of daily hot flashes? Does it improve other common menopausal symptoms? Researchers will compare the supplement to a placebo (a look-alike capsule with no active ingredients) to see if it helps manage symptoms during menopause. Participants will: Take either the supplement or a placebo daily for 30 days Track their hot flashes each day using a short online survey Complete a symptom questionnaire at the beginning and end of the study This study is for women ages 40-60 who have been postmenopausal for at least one year and currently experience bothersome hot flashes.
This research study is enrolling participants diagnosed with breast cancer and receiving/received chemotherapy and/or endocrine therapy. The study's primary objective is to assess the differences in the use of herbs and supplements among the populations served at Cleveland Clinic Florida and Ohio by administering a participant-reported questionnaire.
The purpose of this clinical trial is to assess the effects of a supplement combination on measures of sleep quality and stress in healthy adults.
Study Summary The goal of this study is to understand whether a dietary supplement containing L-arginine, resveratrol, tart cherry, and vitamin C reduces hunger and increases the release of GLP-1, a hormone associated with appetite suppression and improved glucose regulation. The study will also explore the metabolic effects of the supplement. Main Questions: 1. Does the supplement reduce hunger more effectively than a placebo? 2. Does it enhance GLP-1 release in individuals with overweight or obesity? Participants: * Age: 18-60 years * Body Mass Index (BMI): 25-40 kg/m² * Total participants: 25 * Must maintain usual eating and activity habits during the study. Study Design: * Conditions Tested: High-dose supplement, low-dose supplement, and placebo. * Participants will undergo three separate 2-hour lab visits, each after fasting for 8 hours. * During each visit: * Consume the assigned supplement or placebo. * Eat a standardized meal after a 60-minute rest. * Provide blood samples at eight time points to measure GLP-1 and other metabolic markers. * Rate hunger using a 7-point scale. Benefits and Risks: * Benefits: Participants may not directly benefit, but the findings could lead to new appetite-suppressing supplements that aid in weight loss. * Risks: Include discomfort from blood draws, possible gastrointestinal side effects from the supplement, and allergic reactions. Measures are in place to minimize these risks, such as pre-screening for allergies and using trained personnel for blood collection. This study is triple-blinded, meaning neither the participants, researchers, nor analysts will know which condition is being tested during each visit. Data collected will be anonymized to protect participant privacy.
The goal of this clinical trial is to learn the impact of lutein, zeaxanthin, and fish oil (LZF) supplementation in healthy adults. The main question it aims to answer is: Will supplementation with LZF improve macular pigment optical density (MPOD), cognitive performance and bone mass compared to controls after six months? Subjects with an MPOD \<.43 will significantly improve MPOD after 6-months of LZF supplementation. Consuming a LZFO supplement for 6-months will improve visual cognitive performance. Consuming a LZFO supplement for 6-months will improve bone density. Participants will be asked to take either a LZF supplement or placebo daily for 6 months.
Chronic alcohol consumption leads to perturbations in gut microbiome balance (dysbiosis) and disruption of gut barrier integrity. As a result, bacteria, toxins, and metabolites can enter the blood stream and reach distant organs, triggering inflammation and oxidative stress. Through this mechanism gut leak is closely related to the onset of metabolic diseases, such as nonalcoholic fatty liver disease (NAFLD) and diabetes. Despite the prominent role of diet and alcohol in the pathogenesis of metabolic diseases, there is a lack of treatments to mitigate their effects in triggering systemic inflammation and oxidative stress. Novel treatments using generally recognized as safe (GRAS) compounds focused on restoring the intestinal barrier to mitigate metabolite endotoxemia are sorely needed. This project will test the potential of broccoli sprouts extract (BSE) as a GRAS treatment to minimize the combined effect of poor nutrition and alcohol on the gut. Broccoli sprouts are rich in sulforaphane, a bioactive compound derived from the glucosinolate glucoraphanin with anti-inflammatory and antioxidant proprieties. BSE supplementation has been used in preclinical and clinical studies as a health- promoting food, showing significant positive changes in the gut microbiota composition, protection against colitis, cardiometabolic improvement, and lower inflammation. We believe that BSE is a viable alternative therapeutic approach for patients who are resistant to lifestyle changes such as healthy eating and reducing alcohol use. Our purpose is to test BSE supplementation in human subjects with poor nutrition compounded by alcohol use, specifically in older adults who we believe will receive greater benefit from this approach. At the completion of the proposed study, we expect to have determined that treatments using generally recognized as safe (GRAS) compounds can be useful to restore the gut barrier integrity, and as consequence of reduced gut leak we expect to observe lower inflammation and oxidative stress.
The researchers are doing this study to look at how butyrate levels change in participants' stool after they are on a- plant-based diet for at least 12 weeks. All participants will have monoclonal gammopathy of undetermined significance (MGUS) or smoldering multiple myeloma (SMM). We will compare how the plant-based diet, omega-3 fatty acid and curcumin supplements, and placebo (an inactive substance that looks like the study supplements) affect butyrate levels in participants' stool.
The objective of this study is to assess the effectiveness and safety of a novel dietary supplement containing botanical ingredients for hair thinning in men over the course of six months of continuous daily usage.
HydroEye® is a dietary omega 3 fatty acid supplement that contains both EPA and DHA, as well as GLA and ALA in the form of black currant seed oil. It also has vitamins A, E, C, B6, and magnesium, many of which are involved in fatty acid metabolism. In 2013, Sheppard et al. tested HydroEye® in dry eye patients who were not contact lens wearers and found that symptoms and corneal smoothness improved in response to HydroEye® supplementation. To date, HydroEye® has not been assessed in patients with contact lens discomfort; therefore, the purpose of this clinical trial is to determine the efficacy of HydroEye® as a treatment for contact lens discomfort.
This study seeks to test whether these over-the-counter nutritional supplements have an impact on patients' performance during visual field testing.
The purpose of this study is to determine the influence of food consumption timing on the body's response to a zinc supplement
The purpose of the study is to test whether nutritional supplementation during pregnancy is associated with 1) improved maternal health during pregnancy; 2) improved infant birth and neurodevelopmental outcomes, and 3) whether the association between nutritional supplementation during pregnancy and infant outcomes is partially mediated by reductions in maternal perceived stress and stress reactivity during pregnancy.
This study investigates the strength gains associated with resistance training in a group of 18 male high school athletes consuming either a whey protein supplement or chocolate milk following their exercise.
It has been suggested that high amounts of total serum testosterone levels correlate with higher lean body mass, lowered fat mass, greater muscle strength, and faster recovery. These suggestions drive athletes and body builders to find ways to raise their testosterone levels. Many athletes and bodybuilders look to alternative methods to anabolic steroids in order increase their testosterone levels without legal repercussions or physiological side effects. Herbs and other plant extracts have been introduced as a possible source to naturally boost testosterone levels. Research supporting the use of herbs and plant extracts has been shown to be equivocal. However, evidence in studies with hypogonadal men suggests that longjack root may naturally boost testosterone levels. Onnit Labs, LLC has packaged this supplement (T+) which claims it can naturally boost testosterone and lower estrogen levels and subsequently improve performance. This product is a powder (11g) that is mixed with 16 oz of water and consumed 20 minutes prior to anaerobic workouts, such as high intensity weight training. T+ is a multi-ingredient supplement that consists of vitamins B5 and B6, magnesium aspartic acid, mucuna pruriens, longjack root, nettle root, red clover luteolin, resveratrol, beta- alanine, branch chain amino acids, L- glutamine, Bioperine, and Fibersol 2. The active ingredients purported to boost plasma testosterone levels are mucuna pruriens, longjack root, and magnesium aspartic acid. The active ingredients claimed to lower plasma estrogen concentrations are red clover, luteolin, resveratrol and nettle root. All other ingredients (Branch Chain Amino Acids and Beta-Alanine) have been documented to improve exercise performance. It is hypothesized that there will not be any physiological changes after supplementation of T+. It is also hypothesized that performance will not be affected by the supplementation of T+.
It is well accepted that during critical illness there is an increase in protein breakdown and loss of lean body mass. Previous studies have shown that during critical illness muscle breakdown increases dramatically. The aim of our study is to test the hypothesis that critically ill patients have improved outcomes with higher protein supplementation.
Observational study regarding the use of supplements in chronic fatigue syndrome patients
Rotator Injury: * Strength/range of Motion * ASES, VAS
The purpose of this study is to assess whether the greater performance benefits from ingesting carbohydrate-protein supplements during endurance running, in comparison to the traditionally used carbohydrate supplement, is attributed to the extra calories contained in the carbohydrate-protein supplement or the presence of protein.
Three different supplements will be used in the study (fruits and vegetable powders, whey protein and calcium) for patients with hypertension. The null hypothesis was that the supplements had no effects on participants' blood pressure.
Anemia is common among low-income women after they have given birth. Anemia, or low hemoglobin in the blood cells, is usually caused by not having enough iron. Blood cells usually carry oxygen to other parts of the body. Without enough hemoglobin, the ability of blood cells to carry oxygen is decreased. Memory and work may be impaired. The purpose of this study is to evaluate three methods of giving iron to prevent anemia among low-income women after they have given birth.
The goal of the study is to evaluate the effectiveness of a new one-a-day Cooper complete vitamin supplement with or without a combined omega-3 fatty acid supplement on selected clinical risk factor measures. Participants taking the Cooper Complete one-a-day vitamin plus omega-3 fatty acid will have greater improvement in homocysteine, LDL cholesterol, and C-reactive protein than those taking the other supplements.
The goal of this clinical trial is to learn if daily supplementation with SPM Active® can increase omega 3 polyunsaturated fatty acid derivatives and improve well-being in male adults with obesity. The main questions it aims to answer are: Does 2 g/day of SPM Active® for 12 weeks increase plasma levels of 14-hydroxydocosahexaenoic (HDHA), 17-HDHA, and 18-hydroxy eicosapentaenoic acid (HEPE)? Does 2 g/day of SPM Active® for 12 weeks improve self-reported burnout, life satisfaction, and sleep quality? Participants will: Take two SPM Active® soft-gel capsules daily for 12 weeks (±2-4 days). Provide 12-hour fasting blood samples before and after the intervention. Complete validated surveys on burnout, life satisfaction, and sleep quality at baseline and study end.
This pilot study aims to explore the potential benefits of consuming Greek Bottarga (grey mullet fish roe) in overweight, pre-diabetic individuals. Before initiating the crossover randomized controlled trial (RCT), the investigators will conduct a preliminary dose-testing study in five overweight and pre-diabetic adults.Participants will undergo clinical assessments before and after the dietary intervention to evaluate changes in metabolic health markers. Following this, the investigators will proceed with a randomized, controlled crossover trial involving 20 overweight and pre-diabetic adults. This main study phase will compare the metabolic effects of daily Bottarga supplementation to those of a calorically matched dairy product over an 8-week period, with a 2-week washout period between interventions. The investigators anticipate that Bottarga supplementation will lead to improvements in lipid profiles, inflammation, and insulin resistance, which could promote the use of sustainable blue foods as part of a healthy diet.
The goal of this clinical trial is to learn about, test, and compare health outcomes of curcumin supplementation (400 mg). Two primary hypotheses are: 1. Curcumin supplementation will improve glycemic control in older adults with pre-diabetic conditions over a 12-week period. \* Rationale: Curcumin has been shown to enhance insulin sensitivity, reduce fasting blood glucose, and lower HbA1c levels in preclinical and clinical studies. This hypothesis will be tested by measuring changes in fasting glucose, insulin levels, and diabetic biomarkers from baseline (Week 0) to Week 12. 2. Curcumin supplementation will beneficially alter gut microbiota composition and diversity, which is associated with improved metabolic outcomes in older adults with pre-diabetes. * Rationale: Curcumin is known to possess prebiotic-like properties and can influence gut microbial populations. By analyzing stool samples using metagenomic sequencing, this hypothesis will evaluate whether curcumin intake leads to increased abundance of beneficial bacteria (e.g., Akkermansia, Faecalibacterium) and decreased pathogenic taxa, alongside improved metabolic markers.
This is a randomized, double-blind, placebo-controlled parallel trial designed to evaluate the effectiveness of Qualia Magnesium+® supplementation on red blood cell (RBC) magnesium levels in adults aged 21 and older. Approximately 100 participants with baseline RBC magnesium levels below 6.0 mg/dL will be randomly assigned to receive either Qualia Magnesium+ or a placebo. Participants will take 2 capsules daily in the evening, with or without food, for a duration of 12 weeks. The primary outcome is the between-group change in RBC magnesium levels from baseline to Week 12. Secondary outcomes include assessments of sleep quality, perceived stress, magnesium status, and safety and tolerability. Data collection will occur through lab bloodwork and electronic questionnaires.
Citrulline dietary supplements are of interest for improving cardiovascular and exercise performance. The health benefits of citrulline are attributable to its ability to increase arginine levels in the body through the intestinal-renal arginine conversion pathway. From a dietary supplementation standpoint, citrulline offers advantages over arginine due to its reduced first-pass metabolism and ready conversion to arginine within the body. While L-citrulline is the most widely used citrulline dietary supplement, additional salt forms such as citrulline maleate and citrulline HCl may provide improvements in the delivery of arginine to the body. The present study compared the single-dose pharmacokinetics of L-citrulline and citrulline HCl formulations in healthy human subjects. A total of 17 subjects were randomly assigned to groups receiving either 6 g of L-citrulline, 6 g of citrulline HCl or 2 g of citrulline HCl. The resulting increases in citrulline and arginine in plasma and urine samples were determined using liquid chromatography-multiple reaction monitoring mass spectrometry (LC-MRM/MS). All citrulline dietary supplements examined produced time-dependent increases in plasma citrulline and arginine. Both maximal plasma concentration (Cmax) and area under the plasma vs time curve (AUC) for citrulline were modestly reduced in the 6 g citrulline HCl treatment group, the resulting arginine Cmax and AUCs were similar for both L-citrulline and citrulline HCl at the 6 g dose. While the 2 g dose of citrulline HCl had reduced Cmax and AUC values compared to 6 g doses, the time to reach peak levels of arginine were significantly shorter. Furthermore, examination of the relative arginine bioavailability achieved with the 6 g and 2 g citrulline HCl compared to the 6 g L-citrulline was approximately 120% and 215%, respectively, consistent with an improved citrulline to arginine conversion efficiency with the citrulline HCl formulations.
The Understanding and Addressing Rejection of Personalized Cancer Risk Information study is a longitudinal study conducted to understand the nature of phenomenon of personalized cancer risk rejection in the context of mammography screening.
Primary objective: to evaluate the non-inferiority in terms of improvement of hemoglobin (Hg) levels within 30 days postoperatively between two proposed treatments. Secondary objective: to evaluate the financial costs associated with Sucrosomial® Iron treatment compared to Iron Sucrose (IV), while demonstrating non-inferiority in the improvement of hemoglobin levels, reduction in transfusion requirements, and reduction of hospital/ICU stay length
The goal of this clinical trial is to learn if an amino acid supplement that is specifically made for people with Parkinson disease can improve nutrition without interfering with dopamine medication in people living with Parkinson disease. The main question it aims to answer is: • Does an amino acid supplement that is specifically made for people with Parkinson disease have short-term improvements in nutrition deficiencies, while minimally interfering with Parkinson disease medication? Researchers will compare the short-term effects of this specialized nutrition supplement to a supplement that is available for everyone to purchase in a store (whey protein supplement-a milk by-product) and to an inactive supplement. Researchers will then check for the indicators of nutrition levels and the presence of dopamine medication in the blood. Researchers will also assess mood and movement abilities in participants. Participants will be asked to: * attend 4 study visits over the course of 4 weeks (initial orientation visit plus 3 intervention visits). * drink one of the 3 supplements (supplements will be mixed into water to create a beverage) at each of the 3 intervention visits. * participate in blood drawings and mood and movement assessments at each of the intervention visits. * engage in a phone call after each intervention visit to determine any delayed responses.
This open-label pilot study includes adults aged 45 to 79 residing in the United States. The study will last 7 days. Participants will provide blood samples via an at-home finger-prick kit at baseline and day 7 and complete electronic surveys on health indicators at baseline, and days 3 and 7. All procedures are conducted remotely, with no in-person visits, to collect real-world evidence.