When you read product advertisements you see ratios such as 2:1. It says that the kratom extract is two times stronger than its powder form. Since kratom extract contains more alkaloids than powder, the extract is more potent. *A higher concentration of alkaloids make it appear darker in colour.
Some advertisements say 4:1 etc. You assume that means four times stronger than powder form? No.. some re-sellers simply mix “blends” of different powders together or tinctures, call them “extracts” & charge extra $$$. Buyer Beware!
25x is a “Genuine” extract concentrate. Only 20g of 25x is required to double the strength of 1kg powder! It contains high concentrations of Mitragynine and 7-hydroxymitragynine.