In low dosages of a few grams of leaf, kratom functions primarily as a stimulant, with effects similar to caffeine without the marked jitteriness of drinking several cups of coffee. In higher dosages, kratom functions as a neurological opiate, triggering the mu opiate receptors in the brain, even though kratom is chemically different from the opium derived medications such as codeine, morphine, hydrocodone, and oxycodone. Source
KRATOM NOT FOR HUMAN CONSUMPTION
Kratom is for research purposes and crafts such as soap making only not for human consumption and is not intended to be used as a supplement or to treat or cure any illness or condition. Kratom has not been evaluated by the FDA or known to have any medicinal value or to be safe for human consumption.