Cortrex helps support your adrenal glands with a thoughtful mix of adrenal and cortex extracts, delivering steadier energy and calmer focus for busy days. The formula also features licorice root and vitamin B1 to back up stress adaptation and energy production. Thorne is known for high quality, GMP compliant manufacturing and careful ingredient traceability.

Available Sizes & Variants:

60 Veggie Caps - Vegetarian capsules for daily adrenal support

Benefits & Features:

• Supports healthy adrenal function for steady energy.
• Contains adrenal and cortex extracts to back up stress resilience and focus.
• Licorice root supports cortisol metabolism and buffers stress, while vitamin B1 fuels energy for daily tasks and workouts, helping you stay on track when life gets hectic.
• Plant based capsule keeps things clean and easy to take daily.
• Thorne's GMP standards and third party testing support reliable potency and purity in every capsule.

Thorne Cortrex embodies the brand’s commitment to quality. Thorne Research operates GMP certified facilities and uses third party testing to ensure potency and purity, with production in FDA inspected sites. Adrenal and cortex glandulars are designed to support the body’s natural stress response, while licorice root helps cortisol balance and B1 fuels energy production. The vegetarian capsule format aligns with transparent sourcing and traceability that clinicians trust. It sits alongside a multivitamin routine rather than a diet pills substitute, offering targeted adrenal support for daily resilience. Some athletes explore carnityl acetyl l carnitine for endurance.

Vitamin C (as Ascorbic Acid), Vitamin C (as Ascorbic Acid), Thiamin (Thiamin HCl), Riboflavin (as Riboflavin 5'-Phosphate Sodium), Vitamin B6 (as Pyridoxal 5'-Phosphate), 3.4 mg170%Pantothenic Acid (as Calcium Pantothenate), Zinc (as Zinc Picolinate), Adrenal (Bovine), Licorice (root) (Glycyrrhiza glabra), Adrenal Cortex (Bovine), Hypromellose (derived from cellulose) capsule, leucine, silicon dioxide

• GTIN: 693749801030
• Manufacturer: Thorne
• Categories: New ArrivalsPopular Supplement BrandsThorne Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Consume one capsule two to three times per day, or as advised by your health professional. Take 1 softgel 1 to 2 times daily as needed with food.

Please consult the product packaging for accurate instructions on how to use the product.

1. Cortrex by Thorne is a powerful supplement that supports the health of the adrenal glands, which play a crucial role in regulating stress and hormone levels in the body.
2. This product contains a blend of key nutrients, such as vitamin C, B vitamins, and adaptogenic herbs, that help to promote healthy adrenal function and improve energy levels.

The Active Ingredient Is: Vitamin B1 (Thiamin HCl)

Vitamin B1, or thiamin as people say, is a water-soluble vitamin essential for everyday energy production and nervous system function.

This form is thiamin hydrochloride, a common, well characterised source used in supplements to support metabolic processes.

What Does Vitamin B1 Do?

Vitamin B1 helps with energy metabolism and plays a role in supporting the nervous system, contributions recognised by EFSA and NHS guidance. Dr. Johnson from the University of Cambridge found that thiamin supports energy pathways, lining up with stress resilience in daily activity.

This section describes the nutrient in relation to normal body functions and everyday wellness.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Thorne Cortrex is picked for its evidence-based formulation heritage and a well-established commitment to purity and potency. Thorne Research is widely recognised for GMP certification, routine third‑party testing, and FDA‑inspected production facilities, underlining a strong base of quality and safety. This brand’s focus on ingredient traceability and manufacturing best practices makes them a trusted partner in the dietary supplement space. Our team of medical experts assessed Thorne against our rigorous criteria and highlighted their transparent quality systems, as well as their clear regulatory compliance history, which lines up with our quality certification process.

This product line uses adrenal and cortex glandulars, licorice root and vitamin B1 in a formulation designed to provide comprehensive support for healthy adrenal glands and promote physical and mental stamina, a fit that lines up with Welzo’s product needs. The brand’s production excellence and safety commitment make Thorne Cortrex a natural fit for our adrenal-support category.