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Ashwagandha KSM-66®
  • Ashwagandha KSM-66®
  • Ashwagandha KSM-66®
  • Ashwagandha KSM-66®
  • Ashwagandha KSM-66®
  • Ashwagandha KSM-66®
Ashwagandha KSM-66®

Ashwagandha KSM-66®

500mg

The most scientifically studied form of Ashwagandha. 500mg root extract. Emotional balance and calm.

  • Emotional balance & mental wellbeing
  • Calm, stamina & endurance
  • Pure root extract, properly dosed
  • Most clinically studied form
  • Over 50 published clinical trials

What sets DRV+ apart

Many ashwagandha extracts use leaves. We use the root alone, where withanolides (the compounds the body responds to) are most concentrated. Our 500mg is standardised to 5% withanolides: the exact concentration used in the clinical studies that showed real results.

It matters. A lower dose won't deliver the same effect.

KEY FEATURES

  • 500mg of organic ashwagandha root extract (not leaf, not a blend, not 200mg).
  • Standardised to 5% withanolides - the concentration the research actually used.
  • Made without alcohol or chemical solvents.
  • Certified organic. No fillers or additives.

THE EVIDENCE

KSM-66® isn't a marketing claim. It's the extract that's been most clinically studied in the world with over 50 published clinical trials. That means real peer-reviewed research. Real dose tracking. Real results you can look up.

BBC Good Food rated it 'Star Buy' and Best Ashwagandha Capsules 2025. Their independent nutritionists assessed dose, form, purity and value for money.

WHAT TO EXPECT

Take it consistently for at least 8 weeks. If your client sticks with it, they'll notice the difference.

IMPORTANT

Not suitable for clients with an auto-immune or thyroid condition. If your client is pregnant, breastfeeding, taking any medication or under medical supervision, they should speak to their GP or a health practitioner before use.

Nutrition information
PER CAPSULE
Organic Ashwagandha KSM-66 Root Extract (5% withanolides)500mg
  • * NRV - Nutrient Reference Value
  • ** No NRV Established

Ingredients
INGREDIENTS: Organic Ashwagandha KSM-66® (Withania somnifera), Capsule Shell (HPMC, vegetable cellulose).

FREE FROM: Added Sugar, Starch, Sweeteners, Gluten, Wheat, Soya, Lactose, Dairy, Artificial Flavours, Colours and Preservatives.

Directions

Take 1 capsule per day, morning or evening.

Can be taken with or without food. Most commonly taken in the evening before bedtime.

Do not exceed the recommended intake. If your client has an auto-immune or thyroid condition, or is taking medication or under medical supervision, they should consult their GP or a health practitioner before taking Ashwagandha.

Drug interactions
Interaction severityDrug / drug classInteraction
ModerateAntidiabetes DrugsAshwagandha may increase the risk of hypoglycemia when taken with these drugs.
ModerateAntihypertensive DrugsAshwagandha may increase the risk of hypotension when taken with these drugs.
ModerateBenzodiazepinesAshwagandha may increase the sedative risks of these drugs.
ModerateCNS DepressantAshwagandha may increase the sedative effects of these drugs.
ModerateHepatotoxic DrugsAshwagandha may increase the hepatotoxic effects of these drugs.
ModerateImmunosupressantsAshwagadha has an immunostimulant effect and may decrease the effectiveness of these drugs.
ModerateThyroid DrugsAshwagandha may increase the levels of thyroid hormones, and caution is advised in those on thyroid medications.
  • Drug-nutrient interactions have been taken from the Natural Medicines Database, October 2024. Please do your own due diligence before recommending this product to individuals taking medicines.
FAQs
Clinically backed ingredients
Formulated by nutritionists
Earn commission

Ashwagandha KSM-66 benefits®

Helps your body to cope calmly with stressful situations and balance your body’s response to stress.

Supports a balanced mood and relaxation.

Supports emotional resistance and stamina.

Naturally effective supplements

Formulated by nutritionists with evidence-based doses, we're proud that our supplements don't contain any additives. No excipients and no hidden ingredients. All the best forms for your body.

Zero Additives

No Allergens
No Gluten
No Dairy or Lactose
No Soya
No Talc
No Palm Oil
No Bulking Agents
No Colourants
No Flavourants
No Parabens

0%

Additives

100%

Naturally sourced & plant-based ingredients

100%

Active ingredients

Still have questions?
We’ve got answers.

What is Ashwagandha KSM-66®?

Our Ashwagandha KSM-66® (500mg) is 100% organic and the most clinically trialled and world-wide acclaimed form of this herb. Ashwagandha KSM-66® is a full-spectrum extract with the highest concentration of withanolides, taken only from the root of the plant. Standard Ashwagandha supplements extract withanolides from the leaves, which have a lower concentration and potency. The KSM-66® extraction process does not involve any chemicals, alcohol or solvents.

What is the best ashwagandha supplement?

According to BBC Good Food reviews of the best ashwagandha supplements 2025, DRV+ (Formerly DR.VEGAN®) Ashwagandha KSM-66 is ranked 'Star Buy' and Best Ashwagandha Capsules.

Tested for taste, flavour, strength, additives, dietary requirements and value for money, the BBC Good Food independent nutritionist reviewers said "Ashwagandha in capsule form fits neatly into a morning or evening routine. The compostable pouch opens easily and keeps contents fresh. With a neutral taste, each serving provides 500mg KSM-66 root extract with five per cent withanolides, a clinically backed form with proven absorption. Vegan, allergen free and additive free, it’s well priced at about 43p per day and feels high quality for a single-ingredient supplement."

Does your Ashwagandha help with sleep?

Our Ashwagandha KSM-66® may be effective for sleep by helping manage cortisol. Cortisol is the body's stress hormone and it can block the body's production of melatonin, so managing cortisol can help your client get to sleep and stay asleep for longer.

When is the best time to take Ashwagandha?

There isn't a right or wrong time to take Ashwagandha KSM-66®. However, if your client suffers from poor sleep, particularly if due to stress, we recommend taking Ashwagandha KSM-66® in the evenings, 1-2 hours before bedtime.

Your client can also take Ashwagandha KSM-66® during the day for support with stress and stamina.

Is your Ashwagandha KSM-66® organic?

Yes, our Ashwagandha KSM-66® is 100% organic and vegan.

What are contraindications with Ashwagandha?

Ashwagandha is a natural herb and is classified as an adaptogen, helping the body to manage stress. If your client has an auto-immune or thyroid condition, or is taking medication for either of these conditions, they should consult their GP or a health practitioner before taking Ashwagandha.

Food supplements should not be used as a substitute for a varied balanced diet and a healthy lifestyle. If your client is pregnant, breastfeeding, taking any medications or under medical supervision, they should consult a doctor or healthcare professional before use.

Can my client take Ashwagandha KSM-66® long term?

It is generally advisable to take a break after 4-6 months. For long-term stress support, try Stay Calm®. Stay Calm® has been specially formulated to be a daily partner to manage the pressure of daily life, and brings natural calm, balance, energy and focus.

What does ashwagandha do?

Ashwagandha is a herb belonging to the nightshade family and goes by the names of 'Withania Somnifera', 'Winter Cherry' or 'Indian ginseng'. It has been used for thousands of years in traditional Ayurvedic health centres. It has been widely studied for its use for supporting the body's response to stress, anxiety, and supporting brain function, stamina, libido and more. Discover 8 surprising benefits of Ashwagandha.

What is KSM-66®?

KSM-66® is the patented and most clinically studied form of Ashwagandha, giving rise to its worldwide acclaim by scientists. KSM-66 is considered the superior form of Ashwagandha because it only uses the withanolides (the active compounds of Ashwagandha) from the root of the plant, which are pure and clean, unlike standard Ashwagandha which extracts the withanolides from the leaves of the plant.

Does ashwagandha help with anxiety?

Ashwagandha is an adaptogenic herb, which means it works by supporting and balancing the body's response to stress, and the ability to deal with stressful situations. Ashwagandha has also been widely studied to support emotional resistance, stamina, relaxation, and libido. Discover 8 surprising benefits of Ashwagandha.

How long for ashwagandha KSM-66® to work?

It varies from person to person, their existing state, and the benefits expected. Some people will feel the difference within a few hours, while for others it may be after 2-4 weeks of consistent use when they begin to feel the difference.

How much ashwagandha should my client take per day?

The highest recommended daily dose of Ashwagandha is 500mg. The DRV+ (Formerly DR.VEGAN®) Ashwagandha KSM-66® contains 500mg per capsule.

Claims for Ashwagandha KSM-66®

  • Ashwagandha supports the body's resistance to stress, helping the body deal with stress, and maintain mental balance
  • Ashwagandha contributes to relaxation, mental and physical wellbeing, emotional balance, stamina, and feelings of vitality

Practitioner resources

Supplement considerations, practitioner papers and client handouts for this product, to read online or download as PDF.

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