Specimen origin · Varies — fermented or blended

Yellow Vein

Q: Is Yellow Vein kratom legal?

Kratom is federally legal in the US but banned in six states (Alabama, Arkansas, Indiana, Rhode Island, Vermont, Wisconsin) and regulated under the KCPA in five (Arizona, Georgia, Nevada, Oklahoma, Utah). Check our state legality tracker for your jurisdiction.

Q: What is a standard serving size?

Harm-reduction guidelines typically describe 2–4 grams as a low-to-moderate amount and 5+ grams as higher. Start with the smallest amount possible and wait 45 minutes before redosing. Tolerance builds quickly with daily use.

Q: What does Yellow Vein feel like?

Yellow Vein is a mild-potency strain. Marketed as mellow, balanced, long-duration. Results depend heavily on the specific producer.

Q: Is it safe to mix with other substances?

No. Combining kratom with opioids, benzodiazepines, alcohol, or other CNS depressants significantly increases the risk of respiratory depression and death. Do not combine with MAOIs or CYP3A4-inhibiting medications.

Medically reviewed by Dr. Irvine Russell · Updated April 2026

yellow vein

Profile overview

"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.

Specimen No. YELLOW-VEIN

Pharmacognosy reference

Typical alkaloid ranges · HPLC

Mitragynine ~1.0% – 2.0%

7-Hydroxymitragynine < 0.02%

Paynantheine Trace / active

Speciogynine Trace / active

Relative potency rating

Mild Moderate Strong

Reported effects by vein

Marketed as mellow, balanced, long-duration. Results depend heavily on the specific producer.

Frequently asked

Is Yellow Vein kratom legal? ↓

Kratom is federally legal in the US but banned in six states (Alabama, Arkansas, Indiana, Rhode Island, Vermont, Wisconsin) and regulated under the KCPA in five (Arizona, Georgia, Nevada, Oklahoma, Utah). Check our state legality tracker for your jurisdiction.

What is a standard serving size? ↓

Harm-reduction guidelines typically describe 2–4 grams as a low-to-moderate amount and 5+ grams as higher. Start with the smallest amount possible and wait 45 minutes before redosing. Tolerance builds quickly with daily use.

What does Yellow Vein feel like? ↓

Yellow Vein is a mild-potency strain. Marketed as mellow, balanced, long-duration. Results depend heavily on the specific producer.

Is it safe to mix with other substances? ↓

No. Combining kratom with opioids, benzodiazepines, alcohol, or other CNS depressants significantly increases the risk of respiratory depression and death. Do not combine with MAOIs or CYP3A4-inhibiting medications.