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The use of green tea extract as an ingredient in weight-loss supplements and its effects on weight loss.
Green tea extract’s principal catechin, EGCG, can change how drugs and supplements are absorbed, metabolized and excreted by inhibiting intestinal transporters (OATPs), drug‑metabolizing enzymes (nota...
Three of the four ingredients — berberine, glucomannan and green tea extract — have clinical trials or meta-analyses showing modest effects on weight or metabolic markers, but benefits are generally s...
Products sold as “BurnSlim” are marketed with a recurring roster of plant extracts and metabolic aids—most commonly green tea extract, Garcinia cambogia (hydroxycitric acid, HCA), L‑carnitine, conjuga...
Clinical evidence for the two main Lipoless ingredients—green tea extract (predominantly EGCG) and caffeine—shows modest, inconsistent effects on body weight: randomized trials and meta-analyses repor...
Randomized trials and systematic reviews identify a handful of ingredients commonly found in liquid weight‑loss supplements that have modest, short‑term evidence for benefit—chiefly stimulants and sol...
Peer‑reviewed randomized trials and meta‑analyses report small, inconsistent effects of green tea and green coffee extracts on body weight: some trials and pooled analyses find modest weight loss (kil...
Peer‑reviewed randomized clinical trials exist for many supplements marketed for rapid fat loss — including green coffee bean extract, green tea/EGCG, conjugated linoleic acid (CLA), chitosan, glucoma...
Controlled human trials and meta‑analyses show that green tea extracts (which contain catechins, notably EGCG, plus caffeine) can produce small, sometimes statistically significant increases in energy...
Few over‑the‑counter ingredients show robust, sustained weight‑loss benefits; the best‑documented effects are modest, often short‑term, and tied to specific doses or combinations — caffeine and green ...
Peer‑reviewed clinical reviews and meta‑analyses show a mixed, mostly modest body of evidence that a handful of common over‑the‑counter ingredients—caffeine and green tea catechins (often together), s...