Supplements
How are dietary supplements actually regulated?
Supplements reach shelves without FDA approval, but they are not unregulated — here is what the FDA and NIH say manufacturers actually have to do, before and after a product goes on sale.
Supplements
Creatine, beta-alanine, caffeine, nitrates and the rest ranked by trial quality and effect size, with dosing, timing and third-party testing status stated.
Supplements
What does creatine actually do? The evidence, weighed
Creatine is one of the few supplements with strong evidence behind it — for short-duration strength and power, in trained and untrained adults alike — and weaker evidence for the newer claims on its label frontier.
Supplements
DMHA, higenamine and the hidden stimulants on banned lists
Synthetic stimulants and plant-derived beta-2 agonists keep appearing in supplements labeled as natural — and both sport and regulators treat them as prohibited or unlawful.
Supplements
Contamination and banned substances in supplements: what the data show
From a 2004 IOC-lab study finding undeclared prohormones in about 15 percent of samples to modern stimulant adulteration, contamination is documented, category-specific and manageable.
Supplements
Collagen supplements and joint pain: what the trials actually show
Small trials report collagen peptides raising markers of collagen synthesis and easing activity-related joint pain — the evidence base stays thin and short-term.
Supplements
Beta-alanine meta-analyses converge: real gains, narrow window
Recent pooled analyses put beta-alanine's benefit near 2.85 percent — concentrated in efforts lasting about one to ten minutes.