Brand review · April 2026

OPMS — the full lineup reviewed.

Bottom line

OPMS (Organically Purified Mitragyna Speciosa) is the most-distributed kratom brand in US retail. Their Silver capsules are a solid leaf product; their Gold extract shots are potent but dependence-forming. The brand is legitimate but the extract line drives most of the kratom industry's tolerance problem.

The lineup

OPMS Silver Capsules

$15–$30 / 60ct

Leaf powder capsules

Entry SKU. Standard mitragyna powder in capsules. Least controversial line — this is just leaf kratom in capsule form.

OPMS Gold Liquid Shot

$15–$25 / 8ml

Extract shot

High-potency extract. 75–100mg mitragynine per shot. Fast onset. Dependence-forming with daily use.

OPMS Gold Capsules

$20–$40 / 10ct

Extract capsules

Extract in capsule form. Slower onset than liquid shot but equivalent potency per dose.

OPMS Black (various)

$20–$35 / 8ml

Ultra-high extract

Higher-potency extract line. Some SKUs may contain elevated 7-OH — read the label carefully.

Pros

  • Consistent dose and quality
  • Widely distributed — smoke shops nationwide
  • Lab-tested with public COAs on request
  • Leaf Silver line is genuinely a normal leaf product

Cons

  • Extract products drive dependence fast
  • Expensive per mg mitragynine vs leaf
  • Gas station availability normalizes extract use for new users
  • Some Black-line SKUs approach 7-OH territory

Who should buy it

  • Silver: Anyone who wants a tasteless leaf capsule. Decent first-time product.
  • Gold Shot: Experienced users who want fast relief and are committed to NOT using daily.
  • Black line: Experienced users only, after reading labels carefully.

Who should not

  • First-time kratom users — start with loose leaf or Silver capsules, not Gold shots.
  • Anyone recovering from opioid dependence — extract-grade kratom is pharmacologically similar.
  • Anyone who feels compelled to use daily. Take a break.

Comparison alternatives

Compare with MIT 45 (similar positioning), or skip extracts entirely — see our extract vs leaf analysis.

FAQ

Is OPMS the strongest kratom?

OPMS Gold shots are among the strongest readily-available extract products, but specific 7-OH brands (Hydroxie, Super K Extra) exceed them in isolated 7-OH content. For leaf, OPMS Silver is normal-potency.

Is OPMS AKA-GMP certified?

OPMS is a member of the AKA and follows their Good Manufacturing Practices guidelines, though specific certification status has shifted over time. Verify current status at americankratom.org.

Can I take OPMS daily?

Silver capsules (leaf) — yes, with the same caveats as any leaf kratom (tolerance, dependence after 1–2 weeks daily). Gold shots — not recommended. Extract-based daily use builds dependence within days.

OPMS vs MIT 45?

Both are major extract brands with similar positioning. OPMS Silver is a leaf product; MIT 45 is primarily extract. For extract SKUs, they are roughly equivalent in potency and pricing. Brand loyalty in this space is more about availability than objective difference.

Will OPMS help me quit other opioids?

Some users describe using kratom as a harm-reduction bridge. OPMS Gold, because of its extract strength, is a poor choice for this — you trade one dependence for another. Talk to an addiction medicine physician and consider buprenorphine or methadone under medical supervision.