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What is Adrenal?

It may be important after a particularly stressful situation to 'work off' the adrenaline that has been released into your system. Our ancestors handled this naturally through fighting or other physical exertion, but in the modern world, high-stress situations often arise that that involve little physical activity. This can leave high amounts of adrenaline in the body, resulting in insomnia and jittery nerves.

In mammals, the adrenal glands (also known as suprarenal glands) are the star-shaped endocrine glands that sit on top of the kidneys; their name indicates that position (ad-, "near" or "at" + renes, "kidneys"; and as concerns supra-, meaning "above"). They are chiefly responsible for regulating the stress response through the synthesis of corticosteroids and catecholamines, including cortisol and adrenaline.

Anatomy and function: Anatomically, the adrenal glands are located in the thoracic abdomen situated atop the kidneys, specifically on their anterosuperior aspect. They are also surrounded by the adipose capsule and the renal fascia. In humans, the adrenal glands are found at the level of the 12th thoracic vertebra and receive their blood supply from the adrenal arteries.

The adrenal gland is separated into two distinct structures, both of which receive regulatory input from the nervous system:

Adrenal medulla: The adrenal medulla is the central core of the adrenal gland, surrounded by the adrenal cortex. The chromaffin cells of the medulla are the body's main source of the catecholamine hormones adrenaline (epinephrine) and noradrenaline (norepinephrine). These water-soluble hormones, derived from the amino acid tyrosine, are part of the fight-or-flight response initiated by the sympathetic nervous system. The adrenal medulla can be considered specialized ganglia of the sympathetic nervous system, lacking distinct synapses, instead releasing secretions directly into the blood. It is also the main source of dopamine, a catecholamine closely related to adrenaline and noradrenaline.

Adrenal cortex: The adrenal cortex is devoted to the synthesis of corticosteroid hormones from cholesterol. Some cells belong to the hypothalamic-pituitary-adrenal axis and are the source of cortisol synthesis. Other cortical cells produce androgens such as testosterone, while some regulate water and electrolyte concentrations by secreting aldosterone. In contrast to the direct innervation of the medulla, the cortex is regulated by neuroendocrine hormones secreted by the pituitary gland and hypothalamus, as well as by the renin-angiotensin system.

Arteries and veins: Although variations of the blood supply to the adrenal glands (and indeed the kidneys themselves) are common, there are usually three arteries that supply each adrenal gland:

The superior suprarenal artery is provided by the inferior phrenic.
The middle suprarenal artery is provided by the abdominal aorta
The inferior suprarenal artery is provided by the renal artery
Venous drainage of the adrenal glands is achieved via the

suprarenal veins:

The right suprarenal vein drains into the inferior vena cava The left suprarenal vein drains into the left renal vein or the left inferior phrenic vein. The suprarenal veinsmay form anastomoses with the inferior phrenic veins.

The adrenal glands and the thyroid gland are the organs that have the greatest blood supply per gram of tissue. Up to 60 arterioles may enter each adrenal gland.

MegaFood's Adrenal Strength

Gaia Herbs Liquid Phyto Adrenal Health

Solaray's Adrenal 170mg 60Caps
Michael's Adrenal Xtra 15Tabs
NatraBio's Adrenal Support 60Tabs
NatraBio's Adrenal Support 1 fl oz
Dr. Christopher's Adrenal Formula OUT OF STOCK100Caps OUT OF STOCK
Natural Sources Raw Adrenal 60Caps
Natural Sources All Adrenal 60Caps
Herb Pharm's Adrenal Support Tonic 1 oz
Kal's Adrenal Vitality 60Tabs
Pure Encap's Adrenal 60Vcaps
Ultra Raw Adrenal 200Mg 60Tab
Health Plus Cleanse Adrenal 90caps
Jarrow Adrenal Optimizer 60Tabs
Michael's Adrenal Factors 60Tabs
Enzymatic's Fatigued To Fantastic Adrenal Stress-End 60Caps
Michael's Adrenal Xtra 60Tabs
Crystal Star's Adrenal Energy Boost (Formerly ADRN Active) 60Caps
Priority One Vitamin's Adrenal Chelate 100 cap
Priority One Vitamin's Adrenal 250 mg 90 cap
ARG's Adrenal 300mg 75 VCaps
Michael's Adrenal Factors 90Tabs
Maca Magic's Adrenalift Liquid Compond 2oz
Michael's Adrenal Xtra 90Tabs
Ethical Nutrient's Adrenal Plus 120Tabs
MegaFood's Adrenal Strength 30Tabs
Vitanica's Adrenal Assist 90 caps
Gaia Herbs Adrenal Health 60caps
Ridgecrest's Adrenal Fatigue Fighter 60Vcaps
Ultra Adrenal Response 60Tab
Integrative Therapeutic's End Fatigue Adrenal Stress End 50 caps
Ultra Adrenal Cortex 200Mg 60Tab
Professional Solution's Adrenal Support 60 lvcaps
Innate Response's Adrenal Response 60 tabs
Protocol For Life Balance Adrenal Cortisol Support™ 90 vcaps
MegaFood's Adrenal Strength 60Tabs
Herb Pharm's Adrenal Support Tonic Compound 4oz
Allergy Research's Dr. Wilson's Dynamite Adrenal 300 gms 10.6 oz NEW!
MegaFood's Adrenal Strength 90Tabs
Nutricology's Dr. Wilson’s Dynamite Adrenal 300gm
Innate Response's Adrenal Response Complete Care 90 tabs OUT OF STOCK
Planetary Formulas Schizandra Adrenal Complex 850mg 120Tabs OUT OF STOCK
Pure Encap Adrenal 60Vcaps
Quantum Herbal's Adrenal Formula 1oz DISCONTINUED
Priority One Vitamin Adrenal 60 cap
Priority One Vitamin Adrenal Chelate 100 cap
Priority One Vitamin Adrenal 250 mg 90 cap
Tyler Adrenal Complex 60 caps
Vitanica Adrenal Assist 90 caps
Vital Nutrient Adrenal Support 60 caps
Pharmax Adrenal Support 60 caps
Professional Solution Adrenal Support 60 lvcaps
Protocol For Life Balance Adrenal Cortisol Support™ 90 vcaps
Dr.'s Advantage Adrenal Balance & Stress Defense 16 oz
Biomax Formulations Adrenal Cortex Extract Drops 15 ml
Vital Nutrient Adrenal Support 120 caps
Tyler Adrenal Complex 180 caps
Source Naturals Pregnenolone 10mg 60Tabs
Now Foods L-Tyrosine 500mg Free Form 60Caps
Nature's Way Pantothenic Acid 250mg 100Caps
Olympian Labs Melatonin 3mg 75caps
Solaray's Pantothenic Acid 250mg 100Caps
Yogi's Winter Relief Tea Organic Cold Season Tea 16Tbags - 6 PACK
Yogi's Green Tea W/ Kombucha & Chinese Herbs 16Tbags - 6 PACK
Country Life's Biochem DHEA 25mg 30Caps
Enzymatic's Youthful You (DHEA-5) 5mg 60Caps
Solaray's DHEA 5mg 60Caps
Jarrow Pantothenic Acid 500mg 100Caps
Country Life's Biochem DHEA 10mg 50Caps
Triple Leaf Sugar Balance & Women's Tonic Tea 20Bags - 6 PACK
Olympian Labs Policosanol 5mg 60Caps
RU-21 Dietary Supplement's Dietary Supplement RU-21 20Tabs
Solaray's Pantothenic Acid 500mg 100Caps
Natural Factors D'Pantothenic Acid 250mg 90Caps
Source Naturals Pregnenolone 50mg 60Tabs
Source Naturals Calm Thoughts BIO-ALIGNED! 45Tabs
NatraBio's Children's Allergy 1 fl oz
Now Foods L-Tyrosine 500mg Free Form 120Caps
Enzymatic's Eleuthero Extract 200mg 30Caps
Nature's Way - Pantothenic Acid 250 mg 100 caps
Superior Trading Co. Wild Panax Ginseng Extract 10cc
Solaray's For Male Multi Gland 120Caps
Solaray's For Females Multi Gland 120Caps
Life Link DHEA 10mg 100Caps
Vibrant Health's A Man's Zinc 60 Veg Caps
Now Foods L-Tyrosine 750mg 90Vcaps
Herbs Etc Astragalus 1oz (Contains Grain Alcohol)
Doctor's Best's PureWay-C® Sustained Release Vitamin C 60Tabs
NatraBio's BioAllers Mold/Yeast/Dust Allergy Relief 1 fl oz
Now Foods L-Tyrosine Free Form 4oz
Solaray's Mexican Yam Extract and Adrena 500mg 100Caps
Futurebiotics Dhea 25mg 75Caps
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