Background: Nutritional supplementation is widely used to support physical and cognitive performance in football. However, evidence on multi-ingredient protocols combining taurine, caffeine, and phosphatidylserine (PS) remains limited in professional athletes. Methods: Eighty-one professional male football players (19–32 years) were randomly assigned to three groups (n = 27): placebo (P), taurine + caffeine (TC; 1500 mg taurine + 200 mg caffeine), and taurine + caffeine + PS (TCP; 1500 mg taurine + 150 mg caffeine + 300 mg PS) in a randomized, placebo-controlled, single-blind trial. Supplementation lasted 10 days, with a final dose administered 60 min before a standardized 105 min training session. Reaction time, sprint performance, GPS-derived variables, and technical/tactical indicators were assessed. Data were analyzed using ANOVA with post hoc tests, and pairwise comparisons were additionally adjusted using the Holm–Bonferroni correction due to the exploratory nature of the analysis. Results: Compared with placebo, the TCP group was associated with more favorable physical, cognitive, and selected game-related outcomes (p < 0.05). TCP was associated with higher locomotor performance (η² = 0.13–0.20) and smaller fatigue-related declines in sprint performance (−18% vs. −34%) and speed (−10% vs. −19%) (η² = 0.18–0.22). Reaction time and technical indicators, including passing accuracy (84% vs. 75%) and dribbling success (73% vs. 62%), were also improved. Higher coach-rated tactical performance scores were observed in TCP (η² = 0.19–0.25). Conclusions: A short-term multi-ingredient protocol including taurine, caffeine, and PS may be associated with improved physical, cognitive, and selected game-related outcomes in professional football players. However, due to differences in caffeine dosage between groups, the independent effect of PS cannot be determined. Further double-blind studies are warranted. Given the exploratory nature of the analysis, the multiple assessed outcomes, and the partly subjective coach-rated tactical evaluations, the cognitive and tactical findings should be interpreted cautiously and regarded as preliminary rather than confirmatory evidence.

Introduction: As overweight and obesity have become a disease of civilization, more and more people try to accelerate weight reduction in various ways. One of the methods used is the use of dietary supplements. Methods: 30 overweight or obese people took part in the study. At the beginning and at the end of the study, each participant was measured and weighed on a professional Tanita DC-360 body composition analyzer. The age in both groups was similar - the average was about 37 years old, height and weight in the group of men was greater. The subjects used the dietary supplement for 6 weeks. At that time, they did not take any other dietary supplements, followed the diet as before, did not consume caffeine and did not undertake any physical activity at that time. Results: There were significant differences in the results between men and women for the field of physical. Women had a significantly higher result, which means that they were more susceptible to the effects of supplements. Individuals who achieved a weight loss score significantly higher for the field of physical. It also turned out that although weight loss and the absence of gastrointestinal problems during supplementation were observed in both groups, they occurred in a greater amount in women than in men, and the differences these were statistically significant. Higher effectiveness among women may be the result of differences in the functioning of the endocrine system, although it is certainly worth taking a closer look at this issue. 40% of respondents did not notice any weight loss while taking supplementation. Conclusions: Plant-based supplements reduce body weight and metabolism, and may also alleviate gastrointestinal discomfort. In addition, they improve digestion in general, increase vitality and, to a small extent, may contribute to the improvement of the immune system.