Focus Area← All focus areas

Supplements

Peer-reviewed research concerning supplements, summarized and appraised in plain language with every source cited.

42Studies

42Human studies

2026Most recent

13Countries

Zinc supplementation raises serum zinc and 5'-nucleotidase activities in healthy, USA middle-aged men.

Nutrition and health2023

OtherHuman

This study set out to see whether a zinc supplement improves zinc status in healthy middle-aged American men who eat meat, a group that had not been looked at. The…

View study →

Exploring the efficacy and safety of a novel standardized ashwagandha (Withania somnifera) root extract (Witholytin®) in adults experiencing high stress and fatigue in a randomized, double-blind, placebo-controlled trial.

Journal of psychopharmacology (Oxford, England)2023

RCTHuman

This study set out to test whether ashwagandha, a traditional herb, could reduce stress and fatigue in overweight or mildly obese adults aged 40-75 who reported high stress and fatigue.…

Ashwagandha Cardiovascular Endocrine

View study →