Swanson Ashwagandha Ultimate KSM-66 is an adaptogenic supplement built to help with stress resilience and mood, giving calmer energy and a steadier sense of wellbeing. Each capsule holds 250 mg of KSM-66 Ashwagandha extract from certified organic roots, made with a solvent-free extraction process. Swanson has delivered science-backed quality since 1969.

Available Sizes & Variants:

60 capsules - convenient daily bottle.

Benefits & Features:

• A calm focus comes with daily use.
• Adaptogen support helps the body respond to stress and maintain steady energy throughout the day.
• KSM-66 Ashwagandha extract is the star ingredient, standardised from certified organic roots using a solvent-free extraction.
• Swanson's science backed quality heritage since 1969 gives you reassurance that the product is made with care.
• Designed for daily use, this formula supports mood, energy and overall wellbeing for busy lives.

Swanson Ashwagandha Ultimate KSM-66 brings together 250 mg of KSM-66 Ashwagandha extract from certified organic roots, produced with a solvent-free process. KSM-66 is widely recognised for its green extraction method, free from alcohol and chemical solvents, which supports consistent potency. Swanson's science backed quality dates back to 1969, reflecting careful manufacturing and reliable sourcing. The star ingredient helps support stress resilience, mood and energy balance for everyday wellbeing. For broader wellness, some customers pair ashwagandha supplements with probiotics for gut health or the best vitamin d supplement.

KSM-66 Ashwagandha Extract (Withania somnifera) (root), KSM-66 Ashwagandha Extract (Withania somnifera) (root)

• GTIN: 87614210032
• Manufacturer: Swanson
• Categories: Ashwagandha GummiesAshwagandha Supplements, Tablets & CapsulesBest SellersBlood Pressure SupplementsEnergy Vitamins, Supplements & Tablets SupplementsHerbal Remedies & Botanical SupplementsStamina & Endurance SupplementsStress Relief & Calming SupplementsSuperfoods & Green Powders SupplementsSupplements for AnxietySwansonWomen's Mental Health Support Products
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

As a dietary supplement, take one veggie capsule one to two times per day with water. Store in a cool, dry place. WARNING: For adults only. Consult your physician before using this or any product if you are pregnant or nursing, taking medication, or if you have a medical condition. Keep out of reach of children. Do not use if seal is broken.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Ashwagandha (KSM-66 Ashwagha Extract)

Ashwagandha is an adaptogen herb from the Withania somnifera plant, with KSM-66 being a specific extract derived from the root. This form is cultivated and processed to provide a consistent herbal concentrate suitable for dietary use.

Extracts from organic roots using solvent-free methods emphasise a natural, plant-based source designed for regular supplementation.

What Does Ashwagandha Do?

Ashwagandha supports the body’s typical stress response and helps with balanced energy and mood, as described in EFSA-aligned discussions of adaptogenic action. This herb may help with resilience under daily stress according to research considerations in the field.

Evidence suggests cortisol modulation and mood-related effects are seen with use of KSM-66 in appropriate contexts, reflecting its adaptogenic properties. This information is referenced in clinical reviews of ashwagandha extracts.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Swanson is recognised for its enduring commitment to science-backed quality, with a heritage dating back to 1969 and a broad, trusted presence in the supplement world. This enduring reputation, paired with Swanson’s focus on high-integrity sourcing and transparency, made them a natural partner for Welzo’s carefully curated line-up. Our team of medical experts our team of medical experts reviewed Swanson’s credentials and confirmed alignment with Welzo’s standards for credibility, safety, and efficacy. The brand’s use of KSM-66 Ashwagandha Extract sourced from certified organic roots and processed via a solvent-free extraction method highlights Swanson’s dedication to quality and purity, reinforcing why we selected them as our supplier for this adaptogenic supplement. our rigorous testing protocols underpin Swanson’s packaging and product integrity, ensuring consistent quality across batches.

This brand is especially well matched to Ashwagandha Ultimate KSM-66, as it emphasises resilience to stress, mood support, vitality and immune health through a product built around a proven, standardised extract. The Welzo evaluation highlighted Swanson’s established manufacturing standards and market leadership, guiding our final pick to deliver solid value and customer reassurance.