KSM-66 600mg
Per Capsule
Efectiv Nutrition Ashwagandha KSM-66 60 Caps - 60 Caps
Efectiv Nutrition

Ashwagandha KSM-66 60 Caps

★★★★★
5.0 | 5 reviews |  60 Servings
£17.99 £0.30/serving
Ashwagandha KSM-66 Formula Simple daily routine
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Size 60 Caps
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17,600+ Reviews
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Est. 2005
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Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult your doctor before use. Do not exceed the recommended daily intake. Store out of reach of children.

60 Caps

KSM-66 Ashwagandha, 600mg Root Extract for Stress, Recovery and Daily Wellbeing

Efectiv Nutrition Ashwagandha KSM-66 is a single-ingredient capsule providing 600mg of the branded KSM-66 root extract per serving. It is designed for anyone looking for daily stress management, cortisol support and general wellbeing from one of the most researched adaptogenic herbs available. KSM-66 has been the subject of over 20 published human clinical trials, making it the most studied ashwagandha extract on the market.

KSM-66 is extracted using a proprietary process based on green chemistry principles without alcohol or chemical solvents. It uses only the root of the plant, not a mixed whole-plant extract, and is standardised to contain at least 5% withanolides, the primary bioactive compounds. The 600mg dose matches the amount used in clinical studies examining stress reduction, cognitive function, physical endurance and testosterone support in men. The bottle contains 60 capsules at one per day, providing a full two-month supply at approximately 30p per serving.

This is a daily-use product rather than something you take situationally before a specific event. Most research suggests consistent use over 4 to 8 weeks before assessing the full range of benefits. It pairs well with magnesium, creatine, protein or a general multivitamin without overlap or interaction concerns. Take it at a consistent time each day with food for best absorption. The vegetarian HPMC capsule shell contains no unnecessary fillers or bulking agents.

If you want ashwagandha as part of a broader male support formula rather than as a standalone, Efectiv Alpha Male Support includes the same 600mg KSM-66 dose alongside seven other active ingredients including fadogia agrestis and shilajit. For a focused single-ingredient approach at a lower daily cost, this standalone capsule is the more straightforward and economical option.

Key Benefits

KSM-66 Patented

The world's most clinically studied ashwagandha extract with over 20 gold-standard trials proving efficacy for stress, cortisol, and performance.

Cortisol Reduction

Clinically proven to significantly reduce cortisol levels and perceived stress, helping you manage the demands of training and daily life.

Performance Support

Research shows KSM-66 enhances endurance, strength, muscle recovery rate, and cognitive function for both athletes and professionals.

100% Natural Extract

Full-spectrum root extract produced using green chemistry principles without alcohol or chemical solvents for maximum purity and bioavailability.

Frequently Asked Questions

What is KSM-66 and how is it different from generic ashwagandha?

KSM-66 is a branded ashwagandha root extract produced using a proprietary green chemistry process without alcohol or chemical solvents. It is standardised to contain at least 5% withanolides, the key active compounds. Many generic ashwagandha products use mixed whole-plant extracts with inconsistent withanolide content. KSM-66 is the most clinically studied form of ashwagandha, with over 20 published human trials at the 600mg dose.

How long does ashwagandha take to reduce stress and cortisol?

Most clinical studies on KSM-66 measured significant reductions in cortisol and perceived stress after 4 to 8 weeks of daily use at 600mg. Ashwagandha is an adaptogen that works through consistent daily intake rather than providing an acute effect. Some people report subtle improvements in sleep quality and calmness within the first two weeks, but the fuller benefits typically build over a longer period.

Can I take ashwagandha alongside creatine and protein supplements?

Yes. KSM-66 ashwagandha does not interfere with creatine, whey protein, pre-workouts or most other common sports supplements. It operates through the stress and cortisol pathway, which is distinct from how performance supplements like creatine and protein work. Many people include ashwagandha as a daily wellness foundation alongside their training stack.