does glutathione reduce glutamate What is and why must we protect patient access to it? The Protective Role of Glutathione
Description
It also acts as an antioxidant and scavenges free radicals

Add 1.5 mL of water for the same 3.33 mg/mL concentration as a 10mg vial with 3.0 mL
The tissue distribution, biodistribution, immunogenicity of D-retroinverso peptides in humans need evaluation

I would start with one supplement (or none!) and then add one at a time as needed

For patients confirmed to need b12 supplementation, either approach works