It depends on what you are using glutathione for
Arginine vasopressin (AVP) regulation of the HPA axis response to stress is also subject to epigenetic modification by early life events
Exercise particular caution with: Blood pressure medications (nitric oxide effects may alter blood pressure) Immunosuppressive drugs (healing modulation could interact) Growth hormone or related medications (receptor interactions possible) Frequently Asked Questions Glossary of Terms References Sikiric P, et al
Aqua, Glycerin, Glutathione, Imperata Cylindrica Root Extract (and) Aqua (and) Glycerin (and) PEG-8 (and) Carbomer, Propylene Glycol, PEG-20 Methyl Glucose Sesquistearate Xanthan Gum, Hyaluronic Acid, Parfum, Disodium EDTA,Phenoxyethanol
Whenever possible, if you suspect B12 deficiency, its a good idea to get in touch with a veterinarian who may conduct a blood test to determine whether this is actually the case