Adrenal Cortex
Research Reliability -
A glandular extract that replenishes adrenal function, supports cortisol balance, and combats fatigue from chronic stress.
Appetite
Mood
Sleep
5-HTP
Description
Adrenal cortex extract provides concentrated bovine adrenal cortex tissue, delivering naturally occurring adrenal hormones, peptides, and cofactors that support the adrenal glands during periods of chronic stress or fatigue. This type of glandular supplementation follows the principle that like supports like, providing the specific proteins and hormonal precursors the adrenal cortex needs to recover and function optimally. It is commonly used for adrenal fatigue syndromes marked by low morning cortisol, persistent exhaustion, poor stress tolerance, and salt cravings. Best used under the guidance of a functional medicine practitioner.
Effects
First week
some notice steadier energy through the day
Weeks 2–4
smoother stress and energy curve
Ongoing
use cautiously and short term
How it Feels
People running on empty sometimes feel steadier daytime energy within a couple of weeks. Because this is glandular material affecting stress hormones, it is best used carefully and short term with guidance rather than indefinitely.
Usage
Commonly Referenced Starting Amount
75mg
Commonly Referenced Amount
150–300mg
Referenced Upper Limit
500mg
Onset
2–4 weeks
Combinations
Pairs well with
Synergistic
Vitamin C — adrenal glands have the highest vitamin C concentration in the body
Pantethine (B5) — B5 is the precursor to CoA; essential for adrenal steroid hormone synthesis
Ashwagandha — adaptogen that modulates the HPA axis stress response alongside adrenal support
Avoid combining
Contraindicated
Corticosteroid medications — glandular adrenal cortex contains active hormones; additive effect risk
Immunosuppressants — cortisol-like components may interfere with immune-modulating drugs
Biomarkers to Track
Subjective
(Daily)
Energy and fatigue levels (1–10)
Stress and anxiety score
Afternoon energy crash severity
Objective
(Quarterly)
Salivary cortisol (4-point panel)
DHEA-S level
Cortisol awakening response
Glandular material affecting stress hormones, so it warrants caution and short-term use.
People with hormone-sensitive conditions or on steroid medication should avoid it without guidance.
Using it indefinitely, when it is meant for short, supervised courses.