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Transparent Labs KSM-66 Ashwagandha

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Transparent Labs KSM-66 Ashwagandha

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Product Description

Often, the biggest limiter to our gains is just consistency. Transparent Labs KSM-66 Ashwagandha helps endurance athletes manage training stress, improve recovery markers, and maintain performance through high-volume blocks. 

Transparent Labs KSM-66 Ashwagandha delivers 600mg of the most clinically studied adaptogen proven to lower cortisol and support athletic performance.

Clinically Validated for Athletes – KSM-66 is backed by 24+ human studies including specific research on endurance athletes. Studies show improvements in VO2 max (up to 13.6%), reduced cortisol levels (up to 27.9%), and faster recovery between training sessions.

Stress Management That Supports Training Heavy training elevates cortisol—your body's stress hormone—which can impair recovery, disrupt sleep, and compromise immune function. KSM-66 helps regulate cortisol response, creating a hormonal environment where your body can actually adapt to training stress instead of breaking down from it.

Standardized Potency  Each capsule provides 600mg of organic ashwagandha root extract standardized to 5% withanolides—the bioactive compounds responsible for ashwagandha's effects. Unlike generic supplements using leaves and inconsistent extracts, KSM-66 delivers reliable potency backed by third-party testing.

How to Use KSM-66 Ashwagandha

Take one capsule daily with water, with or without food. Most athletes see optimal benefits taking it in the morning or before bed. Consistency matters more than timing—use daily for at least 8-12 weeks to experience full adaptogenic effects.

Research shows KSM-66 benefits become noticeable within 4-8 weeks of consistent daily use. Athletes report improved sleep quality, better mood stability during hard training blocks, reduced muscle soreness, and sustained energy throughout training cycles. This isn't a stimulant or acute performance aid—it's a foundational supplement that supports your body's ability to handle the cumulative stress of serious endurance training.

Supplement Facts

60 Servings
Serving Size: 1 Capsule
Serving Per Container: 60

Amount Per Serving
% Daily Value*
KSM-66® Ashwagandha Extract (Withania somnifera) (root) (min. 5% total withanolides) 600mg**

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established

Ingredients for Transparent Labs KSM-66 Ashwagandha (60 Servings): Rice Flour, Hypromellose (HPMC) Capsule, Vegetable Magnesium Stearate, Silica.

Always Happy Promise: Don't like a product? Tell us within 30 days of receipt and we'll make it right and make you happy. Here at The Feed, we want you to love your experience and the sports nutrition products you purchase. If, for any reason, you are not satisfied with your nutrition specific purchase, tell us.

We do not accept returns on food items that have been opened, but we will issue a store credit if you are unsatisfied. In the event of a return, you must first contact us before sending back a return shipment.

Consumable products over $40 receive a 50% store credit. This includes specialty nutrition products such as ketones or supplements/vitamins.

Clinically Studied KSM-66

Each capsule delivers 600mg of organic ashwagandha root extract. This is the exact KSM-66 extract backed by 24+ clinical trials showing improvements in athletes' cortisol levels, VO2 max, and recovery markers. Root-only extraction preserves the full spectrum of beneficial compounds.

Better Resilience to Training Stress

You'll handle hard training blocks without the crash. Better sleep quality even during high-volume weeks. Improved mood stability when balancing training with life demands. Within 8-12 weeks, athletes typically notice faster recovery between sessions, sustained energy, and the mental clarity to stay consistent.

Real Research in Real Athletes

Unlike most adaptogens marketed on hype, KSM-66 has published studies specifically in endurance athletes showing 13.6% improvements in VO2 max and nearly 28% reductions in cortisol. It's one of the few supplements where the research actually used athletes—not sedentary subjects—and measured performance outcomes that matter.

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