Gymnema sylvestre is known in Ayurvedic practice as gurmar, which translates roughly to 'sugar destroyer.'
Its gymnemic acids temporarily blunt the tongue's perception of sweetness, which is why it appears in formulas aimed specifically at sweet cravings and snacking rather than hunger in general.
It's a narrower tool than it sounds — it targets the taste of sugar, not appetite as a whole.
Where it sits in the formula: one of six named ingredients on the LipoPeak label, alongside Green Tea Leaf Extract, Cayenne Pepper Fruit Extract, Raspberry Ketones.