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In a study investigating the safety of dietary supplements, researchers found that only 21% of the supplements tested by several major retailers contained the ingredients they claimed to contain on their packaging

However, its not a weight loss drugand its most effective when combined with a healthy diet and regular exercise

Nutr Neurosci , 1-11, (2019)

Over time, your body builds physiological toleranceyour cells become less sensitive to the same dose of medication, similar to how caffeine feels less effective after daily use

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