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Description
The short answer is that each of these works on growth hormone but through different mechanisms, and the clinical use cases do not overlap perfectly

Consuming cysteine-rich foods and supplementing with whey protein supports the body's natural production of Glutathione (GSH)

doi: 10.1182/blood-2006-10-054973 144 VillenaJA

Like wheatgrass, it is thought that barley grass has been used by humans for thousands of years, with most of its nutritional properties found in younger plants

PLOS ONE , 9 , e97266

Reprod Fertil Dev 31:547556
