Double Wood Supplements Review: Is This Vendor Legit?

Double Wood Supplements

Company Background

Double Wood Supplements is a small business that was founded in 2014 by two brothers: Evan and Reese Wood – hence “Double Wood”. The company is based in Philadelphia, Pennsylvania and operates online through their official website. Some of their products can also be found on Amazon and other online stores.

Products They Sell

The company sells a variety of nutritional supplements. They specialize in making nootropics or products that are used to support mental health and improve focus, memory, mood and mental energy.

They focus mainly on natural and herbal supplements, although they also sell some synthetic nootropic drugs, like adrafinil and phenibut. Their top sellers include adrafinil, alpha GPC, magnesium l-threonate, and sulbutiamine.

Do Their Products Work?

Double Wood Supplements sell genuine products, but you should keep in mind that supplements work differently for each individual.

Most of their products on Amazon have positive reviews, but then again, there are also consumers who did not get the results they were hoping for.

As far as this brand is concerned, their products are effective and of good quality, but whether they will work for you or not will primarily depend on how well your system responds to the specific supplement/compound in question.

An important thing to note is that Double Wood Supplements, like other vendors, import most of their raw ingredients from China, although the final product is made in the USA. While some Chinese manufacturers send a Certificate of Analysis (COA) showing purity test results with their shipments, they should not be trusted. Chinese manufacturers have been known to send low quality or totally fake products, which is why it is vital to always test each batch of raw materials for identity and purity in a local lab, and that’s what most reliable vendors do.

DWS test their products for microbiological contaminants and heavy metals, and they also perform third-party quantitative purity testing via the HPLC method for most of their products. Their adrafinil and phenibut are both tested for common contaminants and purity (concentration of the active ingredient). You can view the certificates on their website.

Do They Accept Returns?

Yes, they do. You will have 30 days after your purchase to return the product and claim a full refund (minus shipping fees). Refunds are issued for the first opened/used bottle and any number of additional unopened bottles.

If you have bought just one bottle and already opened/used it, you can claim a refund even without returning the product to them.

What About Their Customer Service?

I’d give this company 5 stars for customer service! They respond to emails in a timely manner with all the information and answers requested.

What Are the Disadvantages?

There are a few downsides here, and these are:

1. They don’t carry many nootropic drugs.

Most products carried by DWS are natural dietary supplements. They do also offer adrafinil, and recently they have added phenibut to their selection. These are the only two nootropic drugs that are available at the Double Wood Supplements official website. They don’t currently carry any racetams, noopept, or other popular synthetic nootropics.

2. They don’t sell powder.

Many consumers prefer to buy nootropics in powder form for two reasons: it’s a little cheaper, and it allows you to mix whatever amount of the supplement you need with your favorite drink or shake. Unfortunately, Double Wood Supplements only sell capped supplements.

3. They use gelatin capsules.

The capsules used for adrafinil and most of their other products are made from animal (bovine or pork) gelatin. Only a few of their supplements come in vegetarian capsules.

4. They only ship to the USA.

If you live outside the USA, you can find other US-based vendors that ship worldwide.

Bottom Line

All in all, despite the drawbacks mentioned above, Double Wood Supplements is a legit vendor with good reputation and outstanding customer service. I think their products are worth giving a try.

If you are looking for other vendors that sell racetams and ship worldwide then check out some of the recommended nootropics vendors here.


  • This article states Double Wood uses gelatin capsules (animal derived). I wonder if they’ve changed their gel capsules to vegan ones since this was published just 5 months ago? because they advertise on Amazon that their Pycnogenol is vegan. I’m glad I didn’t order, since I can’t be certain if it’s vegan.

    • Hello Brenda!

      Most of the products from DWS come in animal-sourced gelatin capsules. However, they also seem to offer certain products in non-gelatin vegetarian capsules.

      The Pycnogenol they sell on Amazon does say “vegan friendly”, and it doesn’t seem to contain gelatin (according to the provided label). For this product, they are using hypromellose capsules, which are vegetarian.

      Check out the product label in the accompanying photos, and look under “Other Ingredients” — if you see gelatin listed then it is not vegan.

      And to be 100% sure, I suggest you contact the company directly for up-to-date info. Things may change from time to time or from batch to batch.

  • One of your downsides is incorrect. They do in fact have third party testing for most* of their products. You can see them directly on the website. Maybe that was correct when you wrote the article but doesn’t seem to be correct anymore.

    • When I wrote this post, I was mostly focused on adrafinil since it is more relevant to this website and it is their top-selling product. DWS don’t test their adrafinil (and some other products) for purity in a third-party lab.

      The term “purity” is used loosely as an indication of various quantitative and qualitative characteristics of a material, and there are different purity tests that measure different parameters.

      The Certificate of Analysis that is included on most product pages on the DWS website shows test results for contaminants (microbes and heavy metals) only. Those tests do not analyze the identity and concentration of the material. For example, a Chinese manufacturer may send you baking soda and claim it is adrafinil. It will likely pass the contamination test, although it contains 0% adrafinil!

      To determine the purity/concentration of a certain material in a sample, different assay testing methods can be performed, and most nootropics vendors use the HPLC method. That’s the type of “purity” testing that many consumers look for when buying nootropics, especially chemical drugs like adrafinil and phenibut.

      I have taken another look at the DWS website, and yes, they do have third-party purity (HPLC) tests for several products. For example, on their phenibut page you can view the HPLC Certificate of Analysis by clicking on “View Third Party Test Results”. I’m not sure why they don’t do the same test for adrafinil and other products.

      Anyway, I have updated the post to clarify this. Thanks for your comment!

  • Hi! Recently looking at their website, it seems that there’s an HPLC test in addition to a COA attached to their adrafinil product. It’s dated March 15 (2019). I was hoping to get your opinion on what seems to be recent third party testing. Thanks!

    • Yes, indeed, it looks like they’ve recently added a third-party HPLC purity test for adrafinil.

      The certificate shows that the tested sample complies with the specified limit of 270mg to 330mg per capsule. I’d prefer to see the exact result as a percentage, which is what other vendors will show you in their COAs, but anyway, I think it is good enough — plus or minus 30mg per capsule 🙂

      Once again, the original post gets updated!

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