Vitamin B12 can interact with medications such as colchicine (a medicine used to treat gout), metformin (an anti-diabetic agent), excessive alcohol, vitamin C products, extended release potassium products, antibiotics such as gentamicin, neomycin, tobramycin, anti-seizure medications such as phenobarbital, phenytoin, primidone, medicines used to treat heartburn like H2 blockers such as cimetidine and proton pump inhibitors such as omeprazole, antacids such as ranitidine, cimetidine
Intestinal permeability was tested daily by a lactulose/mannitol urinary excretion test
But like any treatment, it comes with its own set of benefits and risks
SCIENCE-BACKED | Glutathione supplements can be beneficial for many people (though not all, so be sure to consult your doc!)