Discontinuation of the drug resolved symptoms
Labs are out of pocket, though your insurance may cover them
NICE guidelines recommend hydroxocobalamin 1 mg intramuscularly three times weekly for 2 weeks (without neurological involvement) or on alternate days until no further improvement (with neurological symptoms)
This does not necessarily mean that taking them together will not have any adverse reactions
10.1007/s00213-017-4743-1 Psychopharmacology (Berl)
Financial strategies: Prioritize most evidence-based peptides (Cerebrolysin for glaucoma, Thymosin Beta-4 for corneal issues), use loading dose then reduce to maintenance lowering long-term costs, cycle peptides (8 weeks on, 8 weeks off) versus continuous use, combine with well-established supplements (AREDS2) providing proven value, budget realistically understanding $100-$500 monthly ongoing expense, discontinue if financial burden excessive, focus resources on conventional treatments if limited budget