where do you get glutathione Is the Master Antioxidant? Here’s What Science Says how to get more glutathione

Dec 1 2018;128(1):75-84

[24] Deficiency [edit] Vitamin B 12 deficiency can potentially cause severe and irreversible damage, especially to the brain and nervous system

She writes from a non-clinical, educational perspective with the intention to inform and empower, not to diagnose or prescribe.

Pair NSAIDs with Antioxidant Support Since NSAIDs may contribute to oxidative stress, damage the kidneys and toxify the liver, maintaining a diet rich in antioxidantssuch as glutathione-boosting foods and key nutrients like N-acetylcysteine (NAC) and vitamin Ccan help counteract potential depletion

Gastroenterology 143 , 15551563.e1552 (2012)

Avoid freezing solutions unless the manufacturer's guidance allows freezing safely