Carb Blockers

Carb blocker is a marketing term rather than an ingredient. The products in this range, from ForestLeaf, Etta Vita and Plus+Ultra, are capsule supplements aimed at people eating carbohydrate-heavy diets. The ForestLeaf and Etta Vita formulas are built around berberine, the Etta Vita one with akkermansia and green tea extract (EGCG) added; check the Plus+Ultra ingredient panel on its product page.

Berberine doses vary widely between labels, and berberine can interact with some prescription medications, so compare milligrams per serving and ask a healthcare provider if you take medication. Our berberine supplement guide explains what to check.

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. Every order ships free within the US in 3-5 business days, with 10-day returns.

Related guides: Berberine Supplements: What to Check on the Label, What Are “GLP-1 Support” Supplements? Reading the Label Honestly, Berberine Side Effects: Stomach Upset, Drug Interactions and Who Should Avoid It, Berberine Benefits: What the Research Shows and What It Does Not, Ceylon vs Cassia Cinnamon: Coumarin, Blood Sugar Research and Safety, White Kidney Bean Extract: How It Works, Evidence and Side Effects, Gymnema Sylvestre: Benefits, Sweet Taste Research and Safety.