“Proprietary blends” in dietary supplements mask the individual dosages of ingredients, making it impossible to verify whether the amounts present are truly effective.

noli's read

This observation is widely supported by regulatory bodies and nutrition experts. The industry does indeed use these labels to protect secret formulas, but this makes it impossible for the consumer to know if each ingredient reaches the dosage used in clinical studies. According to analyses published in journals such as the 'Journal of the International Society of Sports Nutrition' (observational studies on labeling), this practice is common and can lead to underdosing of key active ingredients. It is therefore accurate that the lack of transparency regarding quantities prevents a rigorous assessment of potential efficacy. This is not an exaggeration, but a documented structural limitation of the industry. Scientific evidence confirms that the efficacy of a compound almost always depends on its dose, and not simply on its presence in the list.

the sources

No named source held this one up — that absence is part of the verdict.