Adrenal extract (whole substance/cortex) 
Adrenal extracts are derived from the adrenal glands of bovine sources. SR-Adrenal contains adrenal extracts that are made using the whole gland and also the cortex or outer portion of the gland.

Whole adrenal extracts (usually in combination with essential nutrients required for proper adrenal function) are most often used in cases of low adrenal function presenting as fatigue, inability to cope with stress, and reduced resistance to infection.

Eleutherococcus senticosus
Eleuthero use dates back 2,000 years, according to Chinese medicine records. Referred to as ci wu jia in Chinese medicine, it was used to prevent respiratory tract infections, colds and flu. It was also believed to provide energy and vitality. Eleuthero has been shown to enhance mental acuity and physical endurance without the letdown that comes with caffeinated products. Research has shown that eleuthero improves the use of oxygen by the exercising muscle. This means that a person is able to maintain aerobic exercise longer and recover from workouts more quickly. It is also useful when the adrenal glands are depleted as it may help alleviate symptoms of fatigue and stress.

Ginseng
Panax (Asian) ginseng roots are taken orally as adaptogens, aphrodisiacs, nourishing stimulants, and in the treatment of type II diabetes, including sexual dysfunction in men.

Rhodiola rosea 
The Vikings used rhodiola to enhance physical strength and endurance, and it was commonly used by many Northern peoples to treat fatigue, poor physical endurance, nervous system disorders, and infections, and to enhance fertility.

Rhodiola rosea is effective for improving mood and alleviating depression. Russian research shows that it improves both physical and mental performance, reduces fatigue, and prevents high-altitude sickness. Rhodiola rosea's effects are attributed to its ability to optimize serotonin and dopamine levels, due to monoamine oxidase inhibition and to its influence on opioid peptides such as beta-endorphins.

Ashwagandha
Ashwagandha stimulates the activation of immune system cells, such as lymphocytes. It has also been shown to inhibit inflammation and improve memory. These actions may support the traditional reputation of ashwagandha as a tonic or adaptogen—counteracting the effects of stress and generally promoting wellness.