However, as with any medical intervention, its crucial for individuals to consult with their healthcare providers before initiating B12 supplementation
Most people refer to B12 as cobalamin, although there are several different forms, including methylcobalamin and 5-deoxy-adenosylcobalamin (the metabolically active versions), hydroxocobalamin, and cyanocobalamin
Whilst the NHS notes that taking up to 2,000 micrograms daily is unlikely to cause harm in most people, there is generally no benefit to consuming such excessive amounts unless treating confirmed deficiency under medical supervision
There's a bunch of different studies
Some vitamin B12 supplements, such as liquid drops or sublingual tablets (tablets that dissolve under the tongue), may also need to be refrigerated to maintain their stability and effectiveness