Form Comparison

Ashwagandha Root and Leaf Extract vs Ashwagandha Root Extract

Q: What is the difference between Ashwagandha Root and Leaf Extract and Ashwagandha Root Extract?

Both have variable absorption and moderate cost. Choose ashwagandha root and leaf extract when you want a lower-dose capsule and accept less traditional precedent; choose ashwagandha root extract when you want the form most trials used.

How ashwagandha root and leaf extract and ashwagandha root extract differ in potency, absorption, tolerance, and cost.

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Quick verdict. Root-only extracts such as KSM-66 (at least 5% withanolides, 250-600 mg a day) were used in most of the stress and sleep trials. Root-and-leaf extracts such as Sensoril are standardized to a higher withanolide glycoside content and work at 125-250 mg, and people often choose them when calming is the main goal, but leaf has no traditional precedent and some countries restrict it. Choose root extract for the deeper trial record and root-and-leaf for a smaller capsule aimed at calm.

Side by Side

	Ashwagandha Root and Leaf Extract (e.g. Sensoril)	Ashwagandha Root Extract (e.g. KSM-66)
Absorption	Variable	Variable
How it is absorbed	Extract of root and leaf, standardized to a higher withanolide glycoside content than root-only extracts. Used at lower milligram doses.	Concentrated root extract standardized to withanolide content. Most randomized trials on stress and sleep used root-only extracts.
Typical dose	125-250 mg daily	250-600 mg daily
Common uses	stress, sleep	stress, sleep, anxiety (small trials)
Side effects	As for root extract.	GI upset, drowsiness. Rare liver injury. May raise thyroid hormone levels. Avoid in pregnancy.
Cost	Moderate	Moderate
Also called	Sensoril, Shoden	KSM-66, standardized root extract

When to Choose Ashwagandha Root and Leaf Extract (e.g. Sensoril)

Choose ashwagandha root and leaf extract when you want a lower-dose capsule and accept less traditional precedent. Leaf is not part of traditional Ayurvedic preparations; regulators in some countries restrict leaf use.

Ashwagandha Root and Leaf Extract (e.g. Sensoril)

Sensoril and Shoden include leaf, which raises both the withanolide percentage and the withaferin A content. Separate, smaller evidence base.

What to look for: The dose used in that extract's own trials, such as 240 mg for Shoden. Do not compare withanolide percentages across brands.

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When to Choose Ashwagandha Root Extract (e.g. KSM-66)

Choose ashwagandha root extract when you want the form most trials used. KSM-66 is a root-only extract standardized to at least 5% withanolides.

Ashwagandha Root Extract (e.g. KSM-66)

The best-studied preparation. Expect a modest effect on self-rated stress, from trials that were small and mostly industry supported.

What to look for: KSM-66 or another named root extract, 300-600 mg a day, withanolide content stated with its assay method.

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Products on Titrate

2,581 of the 214,745 labels in the NIH Dietary Supplement Label Database list ashwagandha as an active ingredient (1,512 on market). 649 are sold as ashwagandha products by name.

Open supplement search

Ashwagandha does not have its own search category yet. Each product above links to its full label in the NIH database.

References

NIH Office of Dietary Supplements. Ashwagandha: Is It Helpful for Stress, Anxiety, or Sleep? Fact Sheet for Health Professionals.

Chandrasekhar K, Kapoor J, Anishetty S. A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults. Indian J Psychol Med. 2012;34(3):255-262.

Sharma AK, Basu I, Singh S. Efficacy and Safety of Ashwagandha Root Extract in Subclinical Hypothyroid Patients: A Double-Blind, Randomized Placebo-Controlled Trial. J Altern Complement Med. 2018;24(3):243-248.

Salve J, et al. Adaptogenic and Anxiolytic Effects of Ashwagandha Root Extract in Healthy Adults: A Double-blind, Randomized, Placebo-controlled Clinical Study. Cureus. 2019;11(12):e6466.

Lopresti AL, et al. An investigation into the stress-relieving and pharmacological actions of an ashwagandha (Withania somnifera) extract: A randomized, double-blind, placebo-controlled study. Medicine (Baltimore). 2019;98(37):e17186.

Björnsson HK, et al. Ashwagandha-induced liver injury: A case series from Iceland and the US Drug-Induced Liver Injury Network. Liver Int. 2020;40(4):825-829.