Thorne Adrenal Cortex

Your adrenals are a surprisingly important aspect of health and stress management. They sit just above your kidneys and produce the hormones that govern how your body handles every form of stress — physical, mental, and environmental. When those glands are taxed by months of hard training, cortisol dysregulation follows. Energy becomes unpredictable, recovery slows, and the effort required just to feel normal starts creeping up.

Thorne Adrenal Cortex is direct support for the gland itself.

Glandular Extract — Unlike adaptogens, which work indirectly by signaling your body to modulate stress hormones, Thorne Adrenal Cortex delivers pure bovine adrenal cortex tissue, the most targeted nutritional support available for the adrenal glands. This glandular approach nourishes the tissue directly, providing the building blocks your adrenals need to maintain healthy cortisol output and hormone balance.

Supports a Healthy Cortisol Rhythm – Cortisol is supposed to peak in the morning and taper through the day. Under high training loads, that rhythm gets disrupted — leaving some athletes wired at night and dragging in the morning. Adrenal Cortex helps stabilize cortisol output, supporting the natural daily hormone cycle your energy, mood, and sleep all depend on.

Flexible Dosing for Athlete-Specific Needs – Each capsule delivers 50mg of pure bovine adrenal cortex extract with no unnecessary fillers. The simple, single-ingredient formula allows you to dial in your dose — one capsule for daily maintenance, up to three capsules during peak stress periods — under the guidance of your healthcare practitioner.

Your adrenal cortex produces three categories of hormones essential for athletic performance: glucocorticoids, which regulate glucose metabolism and immune function; mineralocorticoids, which maintain electrolyte balance and blood pressure; and sex-hormone precursors that support recovery and adaptation. When these systems are running optimally, everything else — training, recovery, sleep — works better.

How to Use Thorne Adrenal Cortex

Daily Support: Take 1 capsule once daily, ideally in the morning with food, to align with your body's natural cortisol peak and support baseline adrenal function throughout your training cycle.

Elevated Training Load: During periods of high training volume, competition prep, or significant life stress, take 1 capsule up to three times daily as recommended by your healthcare practitioner.

Pro Tip: This is a glandular supplement, not a stimulant — results build over several weeks of consistent use. Start with a single capsule daily to assess your response before increasing the dose.