Thorne

Adrenal Cortex

When stress runs high for long enough, daily energy and resilience start to fray at the edges.

£20

1
Delivery includedArrives in 1 to 3 days30-day returns
ThorneAdrenal Cortex
£201

When stress runs high for long enough, daily energy and resilience start to fray at the edges.

Why we love it

When stress runs high for long enough, daily energy and resilience start to fray at the edges. Adrenal Cortex is a long-standing clinical tool for exactly those stretches.

Good to know

  • Best suited to people working through prolonged stress, fatigue or burnout, ideally under clinical guidance. If you're generally well, an adaptogen like ashwagandha may be the gentler place to start.
  • A food supplement. Do not take more than the dose on the label.
  • Not a substitute for a varied, balanced diet and a healthy lifestyle.
  • Check with your doctor first if you are pregnant, breastfeeding, taking medication or under medical care.
  • Keep out of the reach of young children.
Ingredients
Adrenal cortex (bovine)
50mg
Form
Capsule
Capsules
60
Sourcing
Argentinian, grass-fed
How to use
  1. One capsule in the morning with food.
  2. Take earlier in the day to support natural energy rhythm.
  3. Use through demanding periods rather than indefinitely.

If you feel wired or restless, take less, or take a break.

More about it

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.

Delivery and returns

Standard UK delivery included on every order, 1 to 3 working days after dispatch.

Next working day for £25 when you order by 12pm. Orders placed before 12pm on a working day leave the same day. Later orders leave the next working day.

You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. Read the delivery and returns terms

or call 020 3951 3429

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We don't stock glandulars lightly. This is a single, traceable extract from grass-fed Argentinian cattle, made to Thorne's practitioner-grade standard, with no caffeine or synthetic hormones to mask what's actually going on.

Your questions

How do I take Adrenal Cortex?

One capsule in the morning with food. Take earlier in the day to support natural energy rhythm. Use through demanding periods rather than indefinitely.

Who is it suitable for?

Best suited to people working through prolonged stress, fatigue or burnout, ideally under clinical guidance. If you're generally well, an adaptogen like ashwagandha may be the gentler place to start.

How quickly will it arrive?

Standard UK delivery included on every order, 1 to 3 working days after dispatch. Next working day for £25 when you order by 12pm.

Can I return it?

You can return unopened and unused items within 30 days of delivery. This does not affect your statutory rights. You can cancel an order for any reason within 14 days of delivery, under the Consumer Contracts Regulations. Health products that arrive sealed cannot be returned once opened, for hygiene reasons. If an item is faulty, the Consumer Rights Act gives you a repair, a replacement or a refund.

Can I subscribe?

Yes. Choose Subscribe and it arrives every month. You can skip a month, pause or cancel at any time from your Profile, and cancelling stops the next payment.

In their words

Overall

4.935 reflections
1 to 6 of 35 reflections
SK

Finally something that makes a difference

6 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

6 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

6 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

6 months ago

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

FC

Quiet but effective

7 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

7 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.

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