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Vitamin C helps "recharge" glutathione after it has been used to neutralise a free radical, allowing it to go back to work

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Research suggests that zinc and glutathione have a synergistic relationship, meaning they may be more effective when both are present in the body at optimal levels

the muscles are used for the purpose of consumption, and gonads and spermatozoa (only herring) because of the large amounts of xenobiotics, including heavy metals, affecting their biological activity (Napierska et al