VENDOR: O.P.M.S. (Optimized Plant Mediated Solutions)

PRODUCT: Silver Green Maeng Da Kratom Capsules


What are O.P.M.S’s Silver Green Maeng Da Kratom Capsules all about?

O.P.M.S has been around for a long time (about 5 years), and they’ve been selling Green Maeng Da kratom capsules since the very beginning. Some would say that capsules are their specialty due to their outstanding quality and consistency. And yes, they are a certified vendor by the American Kratom Asssociation

O.P.M.S Silver Capsules are a product line of green maeng da kratom capsules containing “1-time Kratom Extract”. O.P.M.S claims to have a very extensive cold water extraction process that is 100% natural – no harsh chemicals used. This process also includes lab testing each and every batch for alkaline content to ensure quality and consistency. 

You can purchase these capsules in various strains including Green Thai, Green Malay, Red Sumatra, White Indo, and Green Borneo. I thought it was super cool to see a variety like this because most Kratom extracts on the market are strictly made from Maeng Da strains. 

I really admire the level of transparency that O.P.M.S displays on their website. There’s lots of very valuable information! Absolutely NO confusion on my end!  

O.P.M.S. Silver Green Maeng Da Kratom Capsules Product Details:

  • O.P.M.S. Silver Box is available in 9.6g, 19.2g, and 38.4g sizes.
  • O.P.M.S Silver Bags are also offered in 16, 30, 60, 120, 240, and 480 ct.
    600mg pure Kratom Leaf per capsule
  • Roughly 7.8mg Mitragynine and 0.27mg 7-OH-Mitragynine content per capsule
  • Extracted from Green Vein Maeng Da Kratom Powder 


Overall Product Quality

The packaging arrived nice and neat. No broken capsules or leakage. My usual serving size is 2 grams, so, I started with 2 capsules to evaluate effectiveness. Each capsule is 600mg, or about a half gram each. Unfortunately, 2 capsules didn’t do the trick. I didn’t feel anything the first time around. 

About 5 hours later, I needed a little pick-me-up to get through the rest of my workday. So, I decided to take 4 capsules to see if that hit the sweet spot. And it did! 

After about 30-45 minutes, I felt a solid surge of energy! Clear-headed and super motivated. I even had some leftover energy once I got off of work to go grocery shopping and re-organize my kitchen. Typically I’m a total slug after work, so, you could say I was pleasantly surprised!  

On a different occasion, I took some of these capsules before the gym to see if it helped me stay focused throughout my workout. Again, I took 4 capsules since it worked so well for me last time. It definitely helped with concentration, but the effects wore off a lot quicker this time (likely because I was exuding so much energy). Either way, still effective! 


Pricing – Green Maeng Da Kratom Capsules

You can purchase OPMS products from a few different websites, but I ended up going with for this order. To ensure that you’re buying authentic O.P.M.S products, I recommend visiting their website and browsing through the list of certified vendors

You can buy the Silver Capsules in a box or a bag. I got the BOX of 32 count capsules and it costed $9.95.

Here is the price breakdown for the box size options:

  • 16 Capsules (9.6g) = $7.95
  • 32 Capsules (19.2g) = $9.95
  • 64 Capsules (38.4g) = $12.95


The Final Verdict

Overall, I’m a big fan of these capsules. The price is reasonable for the great quality that you’re getting. If your primary way to take Kratom is by capsule, try these out. 

Again, please make sure that you are buying authentic O.P.M.S products. There are a lot of fake/counterfeit O.P.M.S products out there, so be careful and only buy from reputable vendors. 

Disclaimer: Kratom is not intended to cure, diagnose, treat, or prevent any disease or condition. 

Make sure to speak to a physician if you have questions before using Kratom.


  1. Hannah March 28, 2022 at 2:48 pm - Reply

    I love OPMS kratom. Great review very on par

  2. Mangee June 4, 2022 at 6:09 pm - Reply

    I just purchased the Green Vein silver bag. 60 capsules at 600mg.each. Price was about $13 at the gas station, significantly more than the last time I purchased there. My prior purchase was 3 oz of powder from Remarkable Herbs, red vein. But since I was going on vacation I decided the capsules would be more convenient. I have yet to try these but I hope they are stronger than the Remarkable Herbs brand. I often have to take large does of Kratom to relieve my anxiety, upwards of 20 grams, which would be nearly this entire package. I’ll update with more information after trying. We honestly have a lack of quality reviews and information on Kratom on the internet, so I appreciate this article. The more reviews the better

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