OPMS Kratom Silver Maeng Da Product Review

August 12, 2020 Articles, Kratom Blends, Kratom Capsules, Kratom Extracts, Kratom Products, Kratom Research, Kratom Reviews, Kratom Shots, Kratom Strains, Kratom Tea, Kratom Vendors


OPMS is one of the gnarliest names in smoke shop kratom products. Their brand is the stuff of legend, for good or ill. Today we’ll be taking a closer look at their Silver Maeng Da Kratom, an item that has been the subject of a lot of online buzz.

As regulars to this blog already know, I’m not too fond of headshop kratom. In fact, I’ve probably written more warning posts about smoke shop brands than just about any other form of Mitragyna speciosa out there.

So where does this product stack up against the bunk strains and bad ass solutions I’ve talked about in the past? Let’s talk about that.


If you’re anything like me, you probably cringe when you hear terms like “genetically modified” or “synthetic.” These words leave a bad taste in my mouth, especially when they refer to something that’s supposed to be all-natural.

Kratom is historically derived from the leaves of Mitragyna speciosa, an evergreen tree that’s indigenous to Southeast Asia. This Ayurvedic herb has been in use as a native folk medicine for hundreds of years.

In the 2000s, kratom became a popular item in the Western world due to its organic properties. Folks embraced M. speciosa because it served as a natural alternative to synthetic chemicals.

Unfortunately due to kratom’s status as an unregulated substance, many suppliers have gone above and beyond to chemically-alter its natural properties, in an effort to make more money. OPMS Kratom Silver Maeng Da is a glaring example of this.

Third party sellers list Kratom Silver Maeng Da as a genetically engineered derivative of the Thai kratom tree. This is vague terminology that can only be intended to confuse the casual consumer.

With kratom extracts and liquid kratom shots in vogue, it’s not surprise that a company would cash in on this trend by producing mass market extracts of their own. The alarming part about OPMS’s approach is the lack of scientific data or detailed information.

To wit: The O.P.M.S. Brand is said to be the strongest available due to its proprietary extraction method. But no further details are provided about what this proprietary method consists of.

This is something that could be completely innocuous. After all, fast food restaurants are always hesitant about divulging their secret ingredients, lest competitors make off with the key to their successful special sauce.

However, consumers need to be aware of the potential pitfalls associated with this lack of disclosure. In the past, we have seen a rash of hospitalizations and illnesses related to tainted or otherwise adulterated kratom powder and kratom capsules.

In 2010, Swedish doctors discovered that the once-famous smoke shop brand Krypton was laced with the synthetic pain killer 0-desmethyltramadol. This resulted in a wave of adverse side effects and related emergency room visits. These fatal intoxications led to a media blitzcrieg on kratom with television personalities and news outlets demonizing the plant and institutions like the FDA scrutinizing vendors.

In 2018, a kratom Salmonella outbreak hammered home the importance of better business practices in the industry at large. Many top-rated kratom suppliers made concerted efforts to test their products prior to distribution and even employ GMP quality control standards.

This may or may not be the case with O.P.M.S., a brand whose website is vague at best. Their homepage mentioned cold press extraction, but provides no data on how that works. What’s worse, their FAQ page claims that they test for Salmonella and “sterilizes all Kratom products,” but no lab results are provided.

All of this raises red flags for many discerning users who prefer to do business with trusted, forthcoming vendors.

Putting all of this aside for a moment, I should tell you about my own experience with this product. This was not my first rodeo, so to speak. I’ve taken OPMS Kratom twice in the last five years. Each time I was disappointed, either by the weakness of the powder, the price of the capsules or both.

Against my better judgment, I decided to give Silver Maeng Da Kratom a whirl. I’m never one to dismiss a brand without first submitting to a well-rounded understanding of their product line.

In the case of OPMS Silver, I really bit off more than I could chew. After purchasing an 8 gram pouch, I made the mistake of taking 4.5 grams. This decision was based on my lackluster experience with O.P.M.S. Gold.

Most seasoned users will agree that a low dosage of Maeng Da is around 2 grams which would make a 4 gram dosage perfectly acceptable for someone with a tolerance.

Not the case here. 4.5 grams put me on my ass! Almost at once, I was hit with a wave of nausea which subsided…only to be replaced, about 30 minutes in, by a case of the wobbles and jitteriness.

Anyone who knows anything about kratom knows that it is NOT supposed to be like this. On the contrary, innumerable coffee drinkers have made the switch to kratom because it’s known for offering a solid pick-me-up without the nervousness associated with a strong cup o’ joe.

Nevertheless, my 4.5 gram dosage left me feeling agitated, unfocused and lethargic. I wasn’t able to work and I felt like I needed to lie down or risk falling. This was powerful stuff!

For my subsequent dosage, I limited myself to a 2.5 gram dose and achieved a more desirable aroma. The relaxation was moderate, the nausea did not occur and I was able to enjoy my day without feeling overstimulated or uncomfortable.


This is what so many reviewers won’t tell you—dosage is key. Nothing is more vital to a positive experience than determining which dosage will suit your needs. For some, a threshold dosage is more than adequate while others will require a bit more.

The following is a general guideline for dosing with OPMS Kratom Silver Maeng Da:

  • Threshold = 1.5 grams
  • Low = 2 to 2.5 grams
  • Moderate = 2.5 to 3 grams
  • High = 4.5 to 6 grams

Anything more than the recommended dosage and you’re likely looking at a crummy day or worse. Remember, it’s not at all uncommon for OPMS Kratom Silver Maeng Da side effects to include nausea, stomach cramps, vomiting, constipation, agitation, lethargy, loss of motor coordination, dilated pupils, profuse sweating or more acute adverse effects.


Opinions of this one have been largely mixed with one user writing, “I’ve had it. It’s pretty good leaf for headshop stuff. The Gold is the extract, the gold is decent these days, but as already stated, nothing like OPMs gold extract used to be a few years ago. They changed the recipe or something.”

Another user said, “The silver OPMS is actually really good. Its basically just maeng da powder like any vendor would have, just more expensive and placed in capsules. It definitely works.”

Elsewhere, a user wrote, “OPMS is definitely the best quality head shop brand. The Maeng Da ISN’T an extract. It’s plain leaf, but very good quality.”


In closing, I can say that OPMS Silver MD is definitely one strong mamma jamma, but I don’t know that I would recommend it to friends or colleagues…and I don’t think this is the right stuff for beginners. If you’re looking for transparency as well as potency, prepare to shop around.

Bob Freville
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