There are several different “strains” of kratom all varying in strength and effects. The different types of kratom are bali,Thai, Borneo, Maeng Da Kratom, Indo, and more. Bali and Borneo tend to be the cheapest and I take it these strains are less potent. Thai kratom and maeng da kratom are reasonably priced and have more potency. I personally have bought allot of Thai kratom its not to expensive and has nice effects.this page
Active Alkaloids in Kratom
There are many alkaloids found in the kratom leaf among them are mitragynine, mitraphylline, and 7-hydroxymitragynine. These are the main alkaloids thought to be responsible for kratoms effects. Acting primarily as mu-opioid receptor agonists, mitragynine, mitraphylline, and 7-hydroxymitragynine feel similar to opiates.
The structure of these molecules are very similar to psychedelics but have no psychedelic effects at all. Since they interact with opiate receptors kratom is some times used to prevent or delay withdrawal in an opiate dependent individual. In my opinion kratom is a much safer substance to wean your self off opiates then pharmaceuticals like methadone.