Because injections do not rely on stomach acid or intrinsic factor, a much larger and more reliable share of the dose reaches your bloodstream, even when gut absorption is poor
B12 shots offer a range of benefits, including increased energy levels, improved metabolism, reduced fatigue, sharper concentration, enhanced sleep patterns, mood elevation, and a strengthened immune system
This isnt practical for individuals who suffer from chronic B12 deficiency or frequently deplete the entirety of their B12 stores
Acute symptoms such as fatigue may improve within days, whilst neurological symptoms like paraesthesia typically require weeks to months of treatment
Other ways of supplementing with vitamin B12 include: oral tablets or capsules oral or nasal sprays drops for under the tongue Your doctor can provide advice on the most appropriate option for you