Short answer: A traditional botanical studied for slowing the absorption of carbohydrates in the intestine, which is the rationale for including it in blood-sugar formulas.
What the specific research claim actually is
It contains compounds that may reduce the size of post-meal glucose rises — a specific, checkable mechanism rather than a vague general blood-sugar claim.
Why this ingredient still carries a genuine caution
May lower blood sugar, so it compounds with diabetes medicines. Little long-term safety data exists at supplement doses.
💡 Worth knowing: this is one of several ingredients in the formula that touch blood sugar directly — worth discussing all of them together with a pharmacist, not just this one in isolation.