You decide to try ashwagandha, search online, and suddenly there are dozens of choices: root powder, extracts, capsules, sticks, and packs labelled KSM-66. If they all contain ashwagandha, what makes one different from another?
The answer starts with the ingredient itself. Ashwagandha is the plant. KSM-66® is a specific branded, full-spectrum extract made exclusively from Ashwagandha root and standardised to 5% withanolides. Understanding that distinction can make it much easier to compare Ashwagandha products.
What is ashwagandha?
Ashwagandha (Withania somnifera) has a long history of use in Ayurveda. Today, it appears in several supplement forms. Some products contain ground root, while others contain a concentrated extract. Extracts can also differ in which part of the plant they use and how they are prepared.
This means the word “Ashwagandha” alone doesn't tell you everything about what's inside a product. One supplement may contain plain root powder, another a concentrated root extract, and another a root-and-leaf extract. The amount, plant part, extraction method and standardisation can therefore differ considerably between products.
So, what is KSM-66®?
KSM-66® is a branded, full-spectrum Ashwagandha extract made exclusively from the root of the plant. It is standardised to 5% withanolides, naturally occurring compounds found in Ashwagandha. Standardisation means the extract is produced to provide a defined level of these compounds rather than leaving their concentration unspecified.
KSM-66® is also a named extract that has been used in multiple human clinical studies. However, research conducted using KSM-66® should be considered specifically in relation to that extract rather than automatically applied to every Ashwagandha powder or extract.
Herbs O’ Shrubs Ashwagandha KSM-66 Kicks provide 400 mg of KSM-66® full-spectrum root extract per stick, standardised to 5% withanolides. The formulation also includes organic honey and natural vanilla flavour, offering a pre-portioned alternative to powders or capsules.
Does that mean every Ashwagandha product without KSM-66® is a poor choice? No. “Regular Ashwagandha” is a broad term that can describe plain root powder or a variety of other extracts. The best way to compare products is to look at the complete formulation and label, rather than relying on the ingredient name alone.
KSM-66 vs Regular Ashwagandha: what should you compare?
Start with these five questions:
- Which part of the plant is used? Look for root, root-and-leaf, or another description.
- Is it a powder or an extract? The amount shown on a label may refer to either, so check the wording.
- How much is in one serving? Compare serving information rather than pack size alone.
- Is it standardised? If the product uses an extract, check whether it specifies a standardisation level, such as a stated percentage of withanolides.
- What else is included? Flavours, sweeteners, and other active ingredients may affect your choice.
- Is it a named or clearly identified extract? A clearly identified extract makes it easier to understand exactly which ingredient is being used and whether published research relates to that specific preparation.
A format you find easy to take consistently also matters. Some people prefer measuring Ashwagandha powder or swallowing capsules, while others prefer a pre-portioned stick that can be taken directly or mixed with water or milk. The format you can comfortably incorporate into your routine may be an important part of your decision.
What does research say about ashwagandha?
Research suggests that certain Ashwagandha preparations may help support stress management and sleep. However, studies have used different extracts, dosages and durations, and many trials have been relatively small. Findings from one specific preparation should therefore not automatically be applied to every product labelled Ashwagandha.
KSM-66® itself has been used in multiple human clinical studies, which is one reason consumers may see the name highlighted on supplement labels. Research relating to a named extract provides more specific information than simply knowing that a product contains “Ashwagandha.”
It is also worth keeping expectations realistic. Supplements work best as part of a broader wellness routine that includes adequate sleep, balanced nutrition, regular movement and appropriate stress-management habits.
Who should check with a healthcare professional first?
Ashwagandha should be avoided during pregnancy and breastfeeding. People with thyroid or autoimmune conditions, those preparing for surgery, and anyone taking regular medication should speak with a qualified healthcare professional before using it. Ashwagandha may interact with certain medicines, including thyroid, diabetes, blood-pressure, sedative and immunosuppressant medicines. Rare cases of liver injury associated with Ashwagandha supplements have also been reported.
If you have an existing health condition or take prescription medication, seek individual advice before adding an Ashwagandha supplement to your routine.
The takeaway
KSM-66® isn't a different herb from Ashwagandha — it's a specific, branded Ashwagandha root extract. What distinguishes it is its clearly defined formulation: a full-spectrum, root-only extract standardised to 5% withanolides and used in published human research.
When comparing KSM-66® with other Ashwagandha products, look at the plant part, extract type, standardisation, amount per serving, other ingredients and format rather than comparing the name or milligrams alone.
Herbs O’ Shrubs Ashwagandha KSM-66 Kicks provide 400 mg of KSM-66® root extract standardised to 5% withanolides in each pre-portioned stick, blended with organic honey and natural vanilla flavour for an easy-to-use everyday format.
The right choice ultimately comes down to understanding what's in the product and choosing a format that fits naturally into your routine.
