citrisafe glutathione 1000mg per serving – Nature's Craft S-Acetyl L-Glutathione 100 mg Antioxidant

They are not designed for any form of human consumption

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Gronwald JW, Plaisance KL 1998 Isolation and characterization of glutathione S-transferase isoenzymes from sorghum

Jane Ellison Conservative gave her answer, and this triggering sentence jumps out of the page: Whilst some patients with Pernicious Anaemia might prefer to have more frequent injections , or for other forms of vitamin B12 to be self-administered, these are matters for individual patients to discuss with their general practitioners (GPs)

Nausea, vomiting, diarrhea, constipation, and abdominal pain all occurred more frequently with combination therapy