Often the most potent strain commonly sold in the US. 'Maeng Da' translates loosely to 'pimp grade' — a marketing term that stuck. Mitragynine content typically higher than other commercial strains.

Potency: moderate

Bali

Widely available and typically moderately priced. The name is historical — most "Bali" kratom is actually grown in Borneo. A beginner-friendly strain with consistent alkaloid profile.

Potency: moderate

Borneo

Borneo kratom comes from the Borneo island region of Indonesia. Generally considered mellow and long-lasting, with a smoother effect curve than Maeng Da.

Potency: moderate

Indo

'Indo' is a catch-all term for Indonesian kratom not tied to a specific island. Typical alkaloid profiles fall within commercial averages; taste and effect can vary by supplier.

Potency: moderate

Malay

Malaysian kratom, though much harder to source legally from Malaysia itself (Malaysia prohibits kratom domestically). Most US "Malay" is actually Indonesian sold under a Malay label.

Potency: mild

Yellow Vein

"Yellow vein" kratom is produced by post-harvest fermentation or blending of red and green leaves. Not a distinct plant variety. Effects are subjective and vary by producer.

Harm reduction first

Kratom is biologically active — start low, understand withdrawal.

Kratom (Mitragyna speciosa) interacts primarily with mu-opioid receptors as a partial agonist. While it does not recruit beta-arrestin-2 as strongly as traditional opioids, prolonged frequent use leads to downregulation and physical dependence.

The risk profile shifts dramatically between raw leaf powder and highly concentrated extract shots (7-OH). We recommend verifying AKA-GMP compliance and laboratory COAs for every purchase.

Safety & Harm Reduction →

Dependence & Tolerance

Physical dependence can occur with regular daily use. Cessation after long-term high dosage typically initiates opioid-like withdrawal symptoms including insomnia, RLS, and anxiety.

Legal Status (US)

Federally legal, but banned in AL, AR, IN, RI, VT, WI. Many municipalities (Sarasota FL, San Diego CA) have local bans.

Lab Transparency

Demand a COA.

Reading lab results →

Clinical Advisory

FDA 7-OH Scheduling Watch

The FDA has signaled intent to schedule 7-hydroxymitragynine. Products featuring elevated 7-OH (Hydroxie tablets, 7 OHMZ, 7 Tabz) carry materially higher dependence risk than leaf kratom.

Regulatory Status Guide →

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