Durable ASHWAGANDHA

Why It Works

According to Dr. Kevin Passero, many of the most common health concerns people face today—including poor sleep, fatigue, brain fog, weight gain, hormonal imbalances and cardiovascular issues—can be traced back to prolonged stress and imbalances in our primary stress hormone, cortisol. Yet this is something that conventional medicine often fails to address.

Through more than 20 years of clinical experience, Dr. Passero has found that most of his patients are dealing with some form of ongoing stress that is not being managed properly. And with so many modern stressors—packed schedules, poor sleep, processed foods, unavoidable exposure to toxins, excessive screentime and more—keeping cortisol in check has never been more difficult or more important.

Ongoing stress triggers prolonged activation of the HPA axis (the body’s stress response system), which leads to persistently high levels of the stress hormone cortisol. Over time, this can impair sleep, digestion, cognitive function, metabolism, heart health, immunity, sexual vitality and hormonal balance. It also taxes the adrenal glands and disrupts thyroid function, often leaving people feeling wired, tired and stuck in a state of burnout.

That’s why ashwagandha is so essential in today’s world. For thousands of years, it has been one of Ayurvedic medicine’s most powerful adaptogens—herbs that help the body adapt to stress and come back into balance. Now, modern science has confirmed that ashwagandha may be the most effective natural solution for regulating cortisol, calming the nervous system and increasing resilience while enhancing just about every aspect of health.

KSM-66® Organic Ashwagandha Root Extract: The World’s Most Researched Adaptogen (600 mg)
Dr. Passero developed Durable ASHWAGANDHA to deliver clinically validated, full-spectrum support for stress relief and resilience. At its core is a clinically proven 600 mg dose of KSM-66®—the most trusted and clinically studied ashwagandha extract available today.

Made exclusively from organically grown ashwagandha root (not leaves), KSM-66® is extracted using a 100% natural, water-based process that preserves the full array of withanolides—one of ashwagandha’s most important active compounds—while eliminating potentially harmful cytotoxins found in leaf-based extracts. KSM-66® contains a potent 5% withanolide concentration and is backed by over 50 clinical trials supporting its safety and efficacy.

In one landmark double-blind study, adults with chronic stress who took 600 mg of KSM-66® daily for 8 weeks saw a 33% drop in cortisol levels. In another 8-week randomized, double-blind, placebo-controlled clinical trial, KSM-66® lowered cortisol and reduced feelings of stress by 64%, anxiety by 76% and low mood by 77%.

Other clinical trials show KSM-66® dramatically improves sleep quality and duration, enhances mental clarity, increases energy and stamina, and even improves sexual function in both men and women. One notable study showed KSM-66® improved libido, sexual function and satisfaction in women by 75%.

KSM-66® also supports optimal thyroid health by balancing the HPA and HPT axes. In adults with low thyroid function, it has been shown to increase Free T3 by 41.5%, normalize TSH and Free T4, and improve overall vitality—all within 8 weeks. (Note: If thyroid health is your primary concern, instead of this formula, consider Durable THYROID, which combines a 600 mg dose of KSM-66® ashwagandha with other thyroid and metabolism supporting ingredients.)

It’s important to be aware that the purity and safety of ashwagandha extracts varies considerably. Many are 1) not certified organic and 2) made with the leaves of the plant, which are less clinically studied and contain potentially harmful cytotoxins.

KSM-66® is certified organic, non-GMO, and made exclusively from root material—never leaves—to ensure maximum efficacy and safety. It is the only ashwagandha extract with 45+ quality certifications and a gold-standard safety profile validated across more than 50 clinical trials.

KSM-66® is the only ashwagandha on the market proven safe for long-term use. It is backed by a recent 12-month safety study that monitored liver and kidney function and adverse events, and found no negative changes, confirming its excellent long-term safety profile.

Storg-C™ Organic Amla: Ancient Adrenal Tonic + Vitamin C Powerhouse (300 mg)
To further enhance resilience and protect the body from the oxidative effects of stress, Durable ASHWAGANDHA also includes a clinically validated 300 mg dose of organic Storg-C™ amla extract

Amla (Emblica officinalis), or Indian Gooseberry, is another revered adaptogen from Ayurveda known for its rejuvenating, immune-boosting and antioxidant properties. Traditionally paired with ashwagandha, it’s one of the world’s most potent sources of natural vitamin C and is rich in health-promoting polyphenols and bioflavonoids. Amla provides powerful support for immune health and collagen production while buffering oxidative stress throughout the body.

Amla is especially helpful for nourishing the adrenal glands, which carry the highest concentration of vitamin C in the body. These glands are the key players in regulating stress hormones like cortisol and adrenaline. Amla helps maintain their function, promoting long-term resilience, better hormonal balance and recovery from depletion.

Storg-C™ is standardized to provide 50% organic natural vitamin C, with the other 50% being comprised of antioxidant co-factors including polyphenols and bioflavonoids that enhance vitamin C’s absorption and antioxidant capacity. Studies show Storg-C™ offers superior bioavailability and antioxidant protection compared to the synthetic and genetically modified forms of vitamin C found in most supplements. It also supports gut microbiome balance, enhances digestion and protects mitochondria—the energy powerhouses of your cells.

Together, organic KSM-66® ashwagandha and organic Storg-C™ amla create a powerful and pure synergistic formula that helps your body adapt to stress while enhancing sleep quality, mood, mental clarity, energy, hormonal balance and immunity—without unwanted side effects.

Why We Use Amber Glass Bottles vs. Clear Glass or Plastic:

• Sustainability: Glass is infinitely recyclable and reusable.
• UV Protection: Amber glass protects the ingredients from light damage.
• 100% Non-Toxic: No risk of chemicals found in plastics leaching into the pills.