mitragynine

Furthermore, mitragynine and 7-OH-mitragynine are G-protein-biased agonists of the mu-opioid receptor - which also do not recruit β-arrestin following receptor activation.

It's also not the first opioid having this property - mitragynine and 7-OH-mitragynine the main opioid alkaloids in kratom) also don't recruit beta-arrestin.

The main active substances in Kratom are Mitragynine and 7-HO-Mitragynine.

It might actually be the case that 7-OH-mitragynine is the most potent form of mitragynine - failed attempts have been made at finding a more potent analogue[1].

My understanding is that mitragynine is an mu-opioid partial agonist which limits its impact even in high doses.

Extracts have never killed anyone (there are few companies that do a supercritical CO2 extraction of mitragynine and 7-OHM).

One of the active alkaloids of kratom, 7-hydroxy mitragynine is an incredibly strong opiate, 17 times as strong as morphine[2].

Synthesize 7-hydroxy-mitragynine and get it approved by the FDA for the treatment of severe chronic pain.

The patent holder for formulations of 7-hydroxy-mitragynine would need to be much more responsible about marketing than the Oxycontin suppliers.

I recommend avoiding extracts—they can be more addictive as they can be 10–50× more potent than regular leaf powder (1–2% mitragynine/7-OH-mitragynine), and I find them less pleasant anyway.

The active alkaloid, 6-hydroxy-mitragynine is 30 times more powerful than morphine by weight.

It's not just another opioid - mitragynine doesn't recruit beta-arrestin, the pathway associated with tolerance build up and side effects like respiratory depression.

From your link "Kratom contains over 50 alkaloids—primarily mitragynine and 7-hydroxymitragynine—which act as partial agonists at μ-opioid receptors"

> Opioids are substances that act on opioid receptors[1] From your link[2]: > The two main chemicals, mitragynine and 7-hydroxymitragynine, have strong activity at the main opioid receptor, the “mu” receptor, which is the same one stimulated by heroin and oxycodone.

The percentage content of the active alkaloids in Kratom (Mitragynine and 7-Hydroxy-Mitragynine) can vary widely, with the stuff sold in gas stations and smoke shops being particularly low-potency or volatile.

Mitragynine and 7-OH-mitra are metabolised by the liver, and yes, there are some reports of liver toxicity.

Mitragynine alkaloids are atypical opiates that are less addictive than the opiates in the poppy plant.