What Is 13-OH?

13-OH is shorthand for 13-hydroxy compounds found in the kratom plant, most commonly sold as a measured blend with mitragynine (MIT) — the primary alkaloid in kratom leaf. Brands formulate 13-OH tablets and extracts for consistent, predictable dosing, similar in concept to other single- or dual-alkaloid kratom extracts.

13-OH Is Not 7-OH

13-OH and 7-hydroxymitragynine (7-OH) are different compounds with different chemical structures, different alkaloid profiles, and different regulatory status. Check each product's label and Certificate of Analysis (COA) for exactly what it contains before you buy, and confirm your state's current kratom laws — they vary and change frequently.

Choosing a 13-OH Product

• Tablets — pre-measured, portable, easy to split for smaller servings
• MIT + 13-OH blends — combine mitragynine with a measured amount of 13-hydroxy compounds
• Extracts — higher concentration per serving; start low

New to 13-OH? Start with a smaller serving and wait to gauge effects before taking more.

Possible Side Effects

As with other kratom-alkaloid products, some customers report nausea, dizziness, drowsiness, or dry mouth. Effects vary by individual. Talk to a healthcare provider before use, especially if you take other medications or have an existing health condition.