Thorne

Adrenal Cortex

£20.00

Glandular support for the system that carries you through demanding, depleting stretches, made to clinical standard.

  • 50mg bovine adrenal cortex
  • Supports a balanced stress response
  • Steadier daily energy
  • Clinician-favoured
1

Secure checkoutFree delivery over £5030-day returns

ThorneAdrenal Cortex
1

What are you hoping to improve?

Pick a goal and we’ll tell you, honestly, whether Adrenal Cortex is the right fit, or what would suit you better.

Recommended Alongside

KSM-66 Ashwagandha

The most clinically studied ashwagandha extract, at the full 600mg dose the trials actually use.

Rhodiola Rosea

An adaptogen for mental stamina, the one to reach for when fatigue, not anxiety, is the problem.

L-Theanine

Calm, focused attention, and the amino acid that takes the jitter out of caffeine.

Interested in more
personalised recommendations?

Set up your wai Profile to connect your wearables, biomarkers and test results. Create a bespoke plan based on your unique biology. Expert-led, evidence-based.

Set up Profile now

About This Product.

When stress runs high for long enough, daily energy and resilience start to fray at the edges. The wired-but-tired feeling, the flat afternoons, the sense of running slightly behind your own day. Adrenal Cortex is a long-standing clinical tool for exactly those stretches.

It is a glandular supplement derived from bovine adrenal cortex tissue, used by practitioners to support the body's own stress-response machinery and help steady cortisol's daily rhythm. It aims to restore capacity rather than borrow against it with a stimulant.

Thorne make it to the standard that has earned the brand its place in clinical practice: clean, traceably sourced from grass-fed Argentinian cattle and precisely dosed, without the fillers that crowd lesser formulations.

Best used through genuinely demanding periods, and a natural companion to adaptogens like ashwagandha and rhodiola when the goal is steady, sustainable resilience.

When stress runs high for long enough, daily energy and resilience start to fray at the edges. The wired-but-tired feeling, the flat afternoons, the sense of running slightly behind your own day. Adrenal Cortex is a long-standing clinical tool for exactly those stretches.

Adrenal cortex (bovine)50mg
FormCapsule
Capsules60
SourcingArgentinian, grass-fed

How to Take It

i.

One capsule in the morning with food.

ii.

Take earlier in the day to support natural energy rhythm.

iii.

Use through demanding periods rather than indefinitely.

If you feel wired or restless, take less, or take a break.
The aim is steadiness, not stimulation.

You May Also Like

Managing stress that lingers

A physician-led talk on the biology of chronic stress, and practical, evidence-based ways to steady a frayed system.

See our next stress talk

Customer Reflections

Overall Sentiment

4.935 reflections
1 – 6 of 35 reflections
SK

Finally something that makes a difference

4 months ago

Been dealing with burnout for the better part of a year and my naturopath suggested this alongside some adaptogenic herbs. Three weeks in and my afternoon energy crashes have noticeably reduced. Not a dramatic overnight shift, but a steady, quiet improvement that I'm genuinely grateful for.

JW

Solid addition to my recovery protocol

4 months ago

Was recommended this by my functional medicine practitioner after a rough patch of overtraining. About four weeks in, my morning cortisol felt more even and I stopped waking up at 3am anxious. Takes a bit of patience but worth sticking with.

PM

Consistent quality you can trust

5 months ago

I've tried a couple of cheaper brands and they just didn't deliver the same results. The manufacturing standard here is clearly a cut above. My integrative GP recommended this specifically and I can see why. Steady improvement in fatigue over about six weeks.

T

5 months ago

Does what it says. My 11am slump is basically gone now. Would buy again without question.

FC

Quiet but effective

5 months ago

Took this on the advice of my nutritional therapist whilst working through a post-viral fatigue protocol. It's subtle — not a stimulant at all — but after about a month I noticed I was responding to stress more calmly rather than feeling completely wiped out by it. Impressed with the quality.

DR

Good product, but bottle only lasts three weeks at the dose I was given

5 months ago

My practitioner had me on two capsules twice daily and a single bottle ran out in under three weeks. The product itself seems effective — my afternoon fatigue is better — but at that dose the cost adds up quickly. Would be good if a larger bottle size was available.

Shop by Selection

Test Before You Supplement.

A blood test is the only way to know what your body actually needs. We’ll tell you which of these supplements is right for you.

Find your panel

More From Thorne. View all