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{"id":556247908425,"title":"Ashwagandha Reviews: Which Brands Are Well-Formulated","created_at":"2022-02-25T20:07:51-05:00","body_html":"\u003cscript type=\"application\/ld+json\"\u003e\/\/ \u003c![CDATA[\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"Article\",\n \"headline\": \"Ashwagandha Reviews: Which Brands Are Well-Formulated\",\n \"keywords\": \"ashwagandha reviews, ashwagandha ksm 66\",\n \"description\": \"Our MD and research team review the medical research on ashwagandha to recommend an effective format and dose, and then recommend a brand based on independent testing.\",\n \"url\": \"https:\/\/illuminatelabs.org\/blogs\/health\/ashwagandha-reviews\",\n\"author\": {\n \"@type\": \"Person\",\n \"name\": \"Taylor Graber MD\",\n \"url\": \"https:\/\/illuminatelabs.org\/pages\/taylor-graber\",\n \"sameAs\": \"https:\/\/www.linkedin.com\/in\/taylor-j-graber-md-81351642\/\",\n \"jobTitle\": \"Content Partner\",\n \"knowsAbout\": \"medicine, health, anesthesiology, iv therapy, science, drugs, pharmaceutical, medical research, scientific research, medical journals, entrepreneurship, healthcare, orthopedic surgery, biomedical engineering\",\n \"alumniOf\": {\n \"@type\": \"EducationalOrganization\",\n \"name\": [\n \"University of California San Diego\",\n \"Arizona University\",\n \"University of Arizona College of Medicine\"\n ]\n },\n \"memberOf\": {\n \"@type\": \"Organization\",\n \"name\": \"Illuminate Labs\"\n }\n},\n\"contributor\": {\n \"@type\": \"Person\",\n \"name\": \"Calloway Cook\",\n \"url\": \"https:\/\/illuminatelabs.org\/pages\/calloway-cook\",\n \"sameAs\": \"https:\/\/www.linkedin.com\/in\/calloway-cook\/\",\n \"jobTitle\": \"President\",\n \"knowsAbout\": \"entrepreneurship, dietary supplements, herbal supplements, eCommerce, medical research\",\n \"alumniOf\": {\n \"@type\": \"EducationalOrganization\",\n \"name\": \"S.I. Newhouse School of Public Communications at Syracuse University\"\n },\n \"memberOf\": {\n \"@type\": \"Organization\",\n \"name\": \"Illuminate Labs\"\n }\n},\n\"editor\": {\n \"@type\": \"Person\",\n \"name\": \"DJ Mazzoni\",\n \"honorificSuffix\": [\n \"M.S.\",\n \"R.D.\",\n \"C.D.N.\",\n \"C.S.C.S.\"\n ],\n \"url\": \"https:\/\/illuminatelabs.org\/pages\/dj-mazzoni\",\n \"sameAs\": \"https:\/\/www.linkedin.com\/in\/dj-mazzoni-rd-cdn-cscs-00a33038\/\",\n \"jobTitle\": \"Medical Reviewer\",\n \"knowsAbout\": \"exercise, drugs, pharmaceutical, health, workout, strength and conditioning, nutrition, dietetics, medicine, medical research, scientific research, scientific method, healthcare, patient care, wellness\",\n \"alumniOf\": {\n \"@type\": \"EducationalOrganization\",\n \"name\": [\n \"State University of New York College Oswego\",\n \"D’Youville College\"\n ]\n },\n \"memberOf\": {\n \"@type\": \"Organization\",\n \"name\": \"Illuminate Labs\"\n }\n},\n\"image\": {\n\"@type\": \"ImageObject\",\n\"url\": \"https:\/\/cdn.shopify.com\/s\/files\/1\/0047\/1524\/9737\/files\/Ashwagandha_Reviews_Thumbnail.png?v=1645838372\",\n\"width\": \"3283\",\n\"height\": \"3283\"\n},\n\"citation\": [\n\"https:\/\/pubmed.ncbi.nlm.nih.gov\/\", \n\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4270108\/\",\n\"https:\/\/illuminatelabs.org\/products\/ashwagandha-extract\",\n\"https:\/\/pubmed.ncbi.nlm.nih.gov\/20390948\/\"\n],\n\"mentions\": [{\n \"@type\": \"Thing\",\n \"name\": \"ashwagandha extract\"\n},\n{\n\"@type\": \"Thing\",\n \"name\": \"ashwagandha root powder\"\n},\n{\n\"@type\": \"Thing\",\n \"name\": \"withanolides\"\n},\n{\n\"@type\": \"Thing\",\n \"name\": \"Organic India\"\n}\n],\n\"datePublished\": \"2022-02-28\",\n\"copyrightHolder\": {\n \"@type\": \"Organization\",\n \"name\": \"Illuminate Labs\"\n},\n\"publisher\": {\n \"@type\": \"Organization\",\n \"name\": \"Illuminate Labs\",\n \"url\": \"https:\/\/illuminatelabs.org\/\",\n \"description\": \"Illuminate Labs is the most transparent supplement company in the U.S., and is a leading publisher of research-based health information.\",\n \"knowsAbout\": \"supplements, science, nutrition, exercise, health, medication, pharmaceutical, wellness, diet, weight loss, medical research\",\n \"publishingPrinciples\": \"https:\/\/illuminatelabs.org\/pages\/editorial-guidelines\",\n \"logo\": {\n \"@type\": \"ImageObject\",\n \"url\": \"https:\/\/cdn.shopify.com\/s\/files\/1\/0047\/1524\/9737\/files\/Illuminate_Labs_Logo.png?v=1641249064\", \n \"width\": 150,\n \"height\": 150\n},\n \"foundingDate\": \"2019-01-30\",\n \"Address\": {\n \"@type\": \"PostalAddress\",\n \"streetAddress\": \"50 Union Street, Unit 9\",\n \"addressLocality\": \"Northampton\",\n \"addressRegion\": \"Massachusetts\",\n \"postalCode\": \"01060\",\n \"addressCountry\": \"US\"\n},\n \"sameAs\": [\n \"https:\/\/www.instagram.com\/illuminatelabs\",\n \"https:\/\/twitter.com\/illuminatelabs\",\n \"https:\/\/www.linkedin.com\/company\/illuminate-labs-supplements\",\n \"https:\/\/www.youtube.com\/channel\/UCpgSJAsIPb-fZ25djtTxBEA\"\n ]\n }\n}\n\/\/ ]]\u003e\u003c\/script\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0047\/1524\/9737\/files\/Ashwagandha_Reviews_Article_Header_Image_Optimized.png?v=1645838333\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cspan class=\"dc\"\u003eA\u003c\/span\u003eshwagandha is one of the most popular herbal supplements, and for good reason. There’s extensive clinical research backing its efficacy for stress reduction, and some data suggesting it may be effective for improving testosterone levels and semen parameters in men. A search for “ashwagandha” on the medical research database \u003c\/span\u003e\u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/\"\u003e\u003cspan style=\"font-weight: 400;\"\u003ePubMed\u003c\/span\u003e\u003c\/a\u003e\u003cspan style=\"font-weight: 400;\"\u003e returns over 1,400 results.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThere are thousands of brands selling ashwagandha in various forms, doses and potencies, and it can be hard for consumers to determine what the best ashwagandha product is.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eIn this article we’ll explain what form and dosage of ashwagandha we recommend based on a review of medical research, as well as which brand we recommend.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cb\u003eAshwagandha Form and Dosage\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOne of the most important things when choosing an herbal supplement is that it contains a dosage that’s been proven effective in medical research. Just because an herb is effective in some studies doesn’t mean it’s effective at all doses.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eAshwagandha is available in many forms, but most of the medical studies use either ashwagandha extract, which is a more concentrated form of the herb, or ashwagandha root powder which is the basic powderized form of the herb.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eBoth forms have been shown to be effective for reducing anxiety, but we tend to recommend ashwagandha extract as it’s more potent and is used more frequently in medical studies.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eA \u003c\/span\u003e\u003ca href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4270108\/\"\u003e\u003cspan style=\"font-weight: 400;\"\u003emedical review\u003c\/span\u003e\u003c\/a\u003e\u003cspan style=\"font-weight: 400;\"\u003e of ashwagandha for anxiety published in the Journal of Alternative and Complementary Medicine highlighted three studies where ashwagandha extract was used. In all three studies, it was found to be effective at reducing anxiety.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThe doses used in the studies were 600, 600 and 1,000 milligrams (mg) per day. We tend to recommend a minimum dose of 600 mg because this seems to be the standard from medical research.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eMany ashwagandha supplements are also standardized for the active compounds in ashwagandha called withanolides. This means the manufacturer will ensure that a minimum amount of withanolides exists in the formulation, effectively ensuring its potency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe don’t have a preference between generic (not standardized) ashwagandha extract and standardized ashwagandha. There are many studies proving both to be effective.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eIn summary, we recommend looking for an ashwagandha extract supplement at a dosage of 600 mg per day or above.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cb\u003eBrand Recommendation\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOne of the best resources for evaluating different brands of supplements is ConsumerLab. This is an independent laboratory that tests supplements to ensure they’re accurately labeled and pure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eFor whatever reason, they failed to test any of their ashwagandha extract supplements for heavy metals, so we can use their data to assess label accuracy and potency but not safety.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOnly three brands of ashwagandha met our category of recommendation standard of an extract product providing at or above 600 mg per day.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNature’s Answer\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e sells a liquid ashwagandha extract that’s available on their site and on Amazon. The per-dose serving is only 400 mg, but since it’s a liquid dropper it’s very easy to just use more drops to increase the serving 50% to 600 mg.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eVitamin World\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e sells a capsule ashwagandha extract at 500 mg per serving, with instructions to take two capsules daily for a total serving of 1,000 mg.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe can’t actively recommend either product because neither publishes independent testing proving their products are low in heavy metals. And as we referenced earlier, for whatever reason ConsumerLab doesn’t publish the contaminant testing for ashwagandha extract supplements as they typically do for other supplement categories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eConsumerLab did publish contaminant testing for ashwagandha root powders, and they found that \u003c\/span\u003e\u003cb\u003eOrganic India\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e ashwagandha root powder, which is available in capsule form, contains safe levels of heavy metals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThe Organic India product seems to be the safest option of those reviewed since it was the only one tested for not only efficacy but toxicity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe also manufacture and sell an \u003c\/span\u003e\u003ca href=\"https:\/\/illuminatelabs.org\/products\/ashwagandha-extract\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eashwagandha extract\u003c\/span\u003e\u003c\/a\u003e\u003cspan style=\"font-weight: 400;\"\u003e product that is batch-tested for label accuracy and purity by an independent lab, but unfortunately we’ve been out of stock of this product for a while due to supply chain issues.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cb\u003eAshwagandha Safety Risks\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThe reason we’re very cautious about recommending third-party ashwagandha supplements without extensive safety testing is because this is a root which uptakes heavy metals at a relatively high level compared with other medicinal plants.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eA \u003c\/span\u003e\u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/20390948\/\"\u003e\u003cspan style=\"font-weight: 400;\"\u003emedical review\u003c\/span\u003e\u003c\/a\u003e\u003cspan style=\"font-weight: 400;\"\u003e of heavy metal accumulation in various medicinal plants found ashwagandha to show “very high metal bioaccumulation.” The levels of heavy metals absorbed by ashwagandha were significantly higher than all other plants examined.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eUnsurprisingly, only 56% of ashwagandha brands pass ConsumerLab tests.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe believe that avoidance of risk is important for long-term health, so we recommend that consumers only purchase ashwagandha from suppliers with proof of independent purity tests. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOrganic India at least passed ConsumerLab testing, but unfortunately ConsumerLab doesn’t publish the actual levels of heavy metals found, so we can’t independently assess whether we believe their product to be safe.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cb\u003eWhat is KSM 66 Ashwagandha\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eIf you’ve reviewed ashwagandha products recently, you may notice many brands featuring something called “KSM-66” ashwagandha on their ingredients list.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThis is a patented extract which is “full-spectrum”, meaning it maintains the ratio of active chemicals as in the dry herb. The company which manufactures it also claims they use no leaves in the formulation; only ashwagandha root.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eWe haven’t come across any clinical data suggesting that KSM-66 is more effective than non-patented ashwagandha extract. If they believe so, we recommend that they prove it in a medical trial comparing the effects. Until then, we will continue to show no preference in our ashwagandha recommendations between KSM-66 and other versions of ashwagandha.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cb\u003eConclusion\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eAshwagandha is a powerful herb that can improve anxiety naturally. It’s one of the most well-studied herbal supplements in the world.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThe herb is very susceptible to absorption of toxins, and for this reason it’s important to select a brand that can prove their ashwagandha supplement meets established benchmarks for purity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eUnfortunately, we can’t find a single ashwagandha brand other than our own which publishes third-party test results proving their ashwagandha is safe, and our product is out-of-stock.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eOrganic India ashwagandha powder seems to be the safest choice of the available options, because it passed ConsumerLab heavy metal testing. Even though it’s not an extract, it still should be effective because it passed ConsumerLab label accuracy testing and ashwagandha root powder has been shown to be effective in medical studies.\u003c\/span\u003e\u003c\/p\u003e","blog_id":49281925193,"author":"Calloway Cook","user_id":26601750601,"published_at":"2022-02-28T08:53:09-05:00","updated_at":"2022-08-18T20:52:17-04:00","summary_html":"We review the medical research on ashwagandha to recommend an effective format and dose, and then recommend a brand based on independent testing.","template_suffix":"","handle":"ashwagandha-reviews","tags":"_related:ashwagandha"}

Ashwagandha Reviews: Which Brands Are Well-Formulated

Ashwagandha Reviews: Which Brands Are Well-Formulated


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Read our Editorial Guidelines to learn more about what makes our site the premier resource for online health information.
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Read our Editorial Guidelines to learn more about what makes our site the premier resource for online health information.


Read our Editorial Guidelines to learn more about what makes our site the premier resource for online health information.

Ashwagandha is one of the most popular herbal supplements, and for good reason. There’s extensive clinical research backing its efficacy for stress reduction, and some data suggesting it may be effective for improving testosterone levels and semen parameters in men. A search for “ashwagandha” on the medical research database PubMed returns over 1,400 results.

There are thousands of brands selling ashwagandha in various forms, doses and potencies, and it can be hard for consumers to determine what the best ashwagandha product is.

In this article we’ll explain what form and dosage of ashwagandha we recommend based on a review of medical research, as well as which brand we recommend.

Ashwagandha Form and Dosage

One of the most important things when choosing an herbal supplement is that it contains a dosage that’s been proven effective in medical research. Just because an herb is effective in some studies doesn’t mean it’s effective at all doses.

Ashwagandha is available in many forms, but most of the medical studies use either ashwagandha extract, which is a more concentrated form of the herb, or ashwagandha root powder which is the basic powderized form of the herb.

Both forms have been shown to be effective for reducing anxiety, but we tend to recommend ashwagandha extract as it’s more potent and is used more frequently in medical studies.

A medical review of ashwagandha for anxiety published in the Journal of Alternative and Complementary Medicine highlighted three studies where ashwagandha extract was used. In all three studies, it was found to be effective at reducing anxiety.

The doses used in the studies were 600, 600 and 1,000 milligrams (mg) per day. We tend to recommend a minimum dose of 600 mg because this seems to be the standard from medical research.

Many ashwagandha supplements are also standardized for the active compounds in ashwagandha called withanolides. This means the manufacturer will ensure that a minimum amount of withanolides exists in the formulation, effectively ensuring its potency.

We don’t have a preference between generic (not standardized) ashwagandha extract and standardized ashwagandha. There are many studies proving both to be effective.

In summary, we recommend looking for an ashwagandha extract supplement at a dosage of 600 mg per day or above.

Brand Recommendation

One of the best resources for evaluating different brands of supplements is ConsumerLab. This is an independent laboratory that tests supplements to ensure they’re accurately labeled and pure.

For whatever reason, they failed to test any of their ashwagandha extract supplements for heavy metals, so we can use their data to assess label accuracy and potency but not safety.

Only three brands of ashwagandha met our category of recommendation standard of an extract product providing at or above 600 mg per day.

Nature’s Answer sells a liquid ashwagandha extract that’s available on their site and on Amazon. The per-dose serving is only 400 mg, but since it’s a liquid dropper it’s very easy to just use more drops to increase the serving 50% to 600 mg.

Vitamin World sells a capsule ashwagandha extract at 500 mg per serving, with instructions to take two capsules daily for a total serving of 1,000 mg.

We can’t actively recommend either product because neither publishes independent testing proving their products are low in heavy metals. And as we referenced earlier, for whatever reason ConsumerLab doesn’t publish the contaminant testing for ashwagandha extract supplements as they typically do for other supplement categories.

ConsumerLab did publish contaminant testing for ashwagandha root powders, and they found that Organic India ashwagandha root powder, which is available in capsule form, contains safe levels of heavy metals.

The Organic India product seems to be the safest option of those reviewed since it was the only one tested for not only efficacy but toxicity.

We also manufacture and sell an ashwagandha extract product that is batch-tested for label accuracy and purity by an independent lab, but unfortunately we’ve been out of stock of this product for a while due to supply chain issues.

Ashwagandha Safety Risks

The reason we’re very cautious about recommending third-party ashwagandha supplements without extensive safety testing is because this is a root which uptakes heavy metals at a relatively high level compared with other medicinal plants.

A medical review of heavy metal accumulation in various medicinal plants found ashwagandha to show “very high metal bioaccumulation.” The levels of heavy metals absorbed by ashwagandha were significantly higher than all other plants examined.

Unsurprisingly, only 56% of ashwagandha brands pass ConsumerLab tests.

We believe that avoidance of risk is important for long-term health, so we recommend that consumers only purchase ashwagandha from suppliers with proof of independent purity tests. 

Organic India at least passed ConsumerLab testing, but unfortunately ConsumerLab doesn’t publish the actual levels of heavy metals found, so we can’t independently assess whether we believe their product to be safe.

What is KSM 66 Ashwagandha

If you’ve reviewed ashwagandha products recently, you may notice many brands featuring something called “KSM-66” ashwagandha on their ingredients list.

This is a patented extract which is “full-spectrum”, meaning it maintains the ratio of active chemicals as in the dry herb. The company which manufactures it also claims they use no leaves in the formulation; only ashwagandha root.

We haven’t come across any clinical data suggesting that KSM-66 is more effective than non-patented ashwagandha extract. If they believe so, we recommend that they prove it in a medical trial comparing the effects. Until then, we will continue to show no preference in our ashwagandha recommendations between KSM-66 and other versions of ashwagandha.

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Conclusion

Ashwagandha is a powerful herb that can improve anxiety naturally. It’s one of the most well-studied herbal supplements in the world.

The herb is very susceptible to absorption of toxins, and for this reason it’s important to select a brand that can prove their ashwagandha supplement meets established benchmarks for purity.

Unfortunately, we can’t find a single ashwagandha brand other than our own which publishes third-party test results proving their ashwagandha is safe, and our product is out-of-stock.

Organic India ashwagandha powder seems to be the safest choice of the available options, because it passed ConsumerLab heavy metal testing. Even though it’s not an extract, it still should be effective because it passed ConsumerLab label accuracy testing and ashwagandha root powder has been shown to be effective in medical studies.





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