Nanjing Nutrabuilding Bio-Tech Co., Ltd.

The goal of this clinical trial is to evaluate whether dihydroberberine (DHB) supplementation can improve body composition, blood sugar control, energy levels, appetite, and mood in healthy adults with overweight or mild obesity. The study focuses on men and women aged 35-55 years with a BMI between 27.0 and 33.0 kg/m².
The main questions it aims to answer are:
Does daily DHB supplementation lead to greater reductions in body weight over 12 weeks compared to placebo? Does DHB improve glycemic responses, appetite regulation, energy levels, and mood, both acutely (short-term) and chronically (over 12 weeks)?
Researchers will compare two groups-one receiving DHB (400 mg/day) and the other receiving a placebo-administered as two capsules twice daily for 12 weeks. Participants will:
Attend three in-clinic visits over approximately 14 weeks (including screening, baseline, and week 12 visits) Undergo mixed-meal tolerance tests (MTTs) to assess glucose metabolism, appetite, and energy levels Complete body composition assessments (including DXA scans), blood tests (e.g., glucose, insulin, HbA1c), and mood questionnaires (POMS-2) Be monitored for safety throughout the study

The goal of this clinical trial is to find out whether daily supplementation with Alpha-Glycerophosphocholine (α-GPC) can improve cognitive function and sports performance in healthy adults. It will also assess the safety and tolerability of α-GPC when taken over a 6-week period.
The main questions this study aims to answer are:
Does taking α-GPC every day improve cognitive performance on tests such as the Stroop Test, Go/No-go Test, Sustained Attention to Response Task (SART), and Digit-Symbol Substitution Test (DSST)? Does α-GPC enhance upper and lower body sports performance? Does α-GPC positively affect perceived mood, energy, and motivation? Is α-GPC safe and well tolerated compared to a placebo? Researchers will compare α-GPC (350 mg per day) to a placebo (an inactive substance that looks the same) in a randomized, double-blind study. Neither the participants nor the researchers will know who receives α-GPC or the placebo.
Participants will:
Be randomly assigned to take either α-GPC or placebo capsules once daily for 6 weeks Attend 3 study visits over an 8-week period at Atlantia Clinical Trials in Cork, Ireland Complete cognitive and physical performance tests both acutely (shortly after a single dose) and after 6 weeks of daily use Have their vital signs, body weight, and any adverse events monitored throughout the study Record their diet and well-being during the study period This study will include 80 healthy adults aged 25-55 years who regularly engage in physical activity. The results will help determine whether α-GPC has benefits for brain function and physical performance, and whether it is safe for long-term use.

The goal of this clinical trial is to learn if Dihydroberberine (DHB) supplementation affects adults with pre-diabetes.
The main questions it aims to answer are:
Does DHB supplementation increase the concentration of GLP-1 in the blood? Does DHB supplementation affect appetite, mood, and energy levels? Does DHB supplementation affect body weight, blood sugar control and insulin? Researchers will compare DHB supplementation to a placebo (a look-alike substance that contains no drug) to see if DHB has any effect.
Participants will:
Take DHB or a placebo every day for 6 weeks. Participate in tests to measure GLP-1 levels, blood glucose, insulin and other markers.
Have their continuous blood sugar profiles (with CGMs) monitored to see how much time their blood sugar spends in a healthy range.
Rate their appetite, mood, and energy levels using a visual analog scale.