13Oh (Corydalis)

What Are 13-OH Kratom Products?

13-OH products are kratom tablets, capsules, and ready to drink shots built around 13-hydroxymitragynine, usually blended with mitragynine (MIT) and sold by the milligram per serving. They come from the kratom plant, Mitragyna speciosa, and are a newer addition to the kratom tablet and extract shelf. On this page you can buy 13-OH, also listed here under the Corydalis heading, by brand, format, strength, and count, and each product has a lab report (COA) you can check.

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What Is 13-OH (13-Hydroxymitragynine)?

13-OH is short for 13-hydroxymitragynine, a kratom-associated compound named for its position number on the mitragynine molecule. Mitragynine is the main alkaloid in kratom leaf, and compounds such as 7-hydroxymitragynine are described across scientific and WHO reviews. 13-hydroxymitragynine is a far newer and less documented term that appears mainly on product labels rather than in established literature, so the name alone does not confirm what is in a tablet. The COA is what tells you the actual content. You may also see 13-OH written as 13OH, 13 hydroxy, or 13 hydroxymitragynine, and this collection listed as 13 oh corydalis yanhusuo.

Is 13-OH the Same as 7-OH?

No. "13-OH" and "7-OH" are different position names, so a 13-OH product is not a 7-hydroxymitragynine (7-OH) product. The numbers point to different spots on the molecule, and the two are not interchangeable. Shoppers compare them because both appear on higher-strength kratom tablets, but they are distinct names, and a product sold as 13-OH or MIT + 13-OH is not a 7-OH product. Check the COA to confirm exactly what a given tablet contains.

What Does "MIT + 13-OH" Mean on the Label?

On most of these labels MIT stands for mitragynine and 13-OH for 13-hydroxymitragynine, so "MIT + 13-OH" means the product blends the two. The brands on this page pair the two in a single tablet, capsule, or shot, and some add kava. The milligram figure on the front is the blend strength per serving, not a 7-OH amount. Read the panel and the COA to see the split.

Types and Formats of 13-OH Products

HITT stocks 13-OH in several formats so you can match the product to how you want to take it. Here is how the main types compare.

How Strong Is a 13-OH Tablet, and How to Read the Label

13-OH strength is listed as milligrams per serving, and the strongest option is simply the one with the highest milligram amount per tablet, capsule, or bottle. Many chewable tablets are scored, which means a single tablet is built to be split into smaller servings, so a whole tablet is not always one serving. Use the checklist below before you buy.

13-OH Tablets vs Kratom Powder and Extracts

13-OH products are measured, pressed, or bottled servings rather than loose leaf. Where kratom powder is sold by the gram and a standard kratom extract concentrates mitragynine, 13-OH tablets and shots are pre-dosed by the milligram and made to be portable. All come from the same kratom plant, and the COA is the way to compare what is actually inside each one.

Buy 13-OH Products Online at HITT

HITT brings 13-OH tablets, capsules, and shots from several brands into one catalog, so you can compare format, strength, and count in one place. Every product is third party lab tested with a COA available, lists its milligrams per serving, ships fast and discreet, and qualifies for free shipping over $75. 13-OH is sold for adults 21 and over, and anyone new to this format should start with the lowest-strength option or a scored tablet split into a smaller serving.

13-OH FAQs

What does 13-OH stand for?

13-OH is short for 13-hydroxymitragynine, a kratom-associated compound. It is a label name, so the COA is what confirms the actual content of a product.

Is 13-OH the same as 7-OH?

No. They are different position names on the molecule, and a 13-OH product is not a 7-hydroxymitragynine product. Check the COA for the specifics.

What does MIT + 13-OH mean?

MIT is mitragynine and 13-OH is 13-hydroxymitragynine, so MIT + 13-OH means the product blends the two. The front milligram figure is the blend strength per serving.

Why is 13-OH also listed under Corydalis?

The category carries both names because some retailers group these products under a Corydalis heading. The product labels center on 13-OH and MIT, and the COA lists what each one actually contains.

How many milligrams are in a 13-OH tablet?

It varies by product, commonly from about 80mg to 300mg per tablet, with shots listed per bottle. The pack shows both the per-unit strength and, with the count, the total milligrams.

Where can I buy 13-OH online?

You can buy 13-OH tablets, capsules, and shots online at HITT, sorted by brand, format, strength, and count, each with a COA and fast, discreet shipping.