B12 injections and nasal sprays are available on prescription for those with diagnosed deficiencies, and oral supplements are also available to buy without prescription
The injector inserts the needle into the pinched skin layer two inches below the navel
Sharps container Start injecting vitamin B-12 today to begin feeling many of the common benefits our customers are feeling, such as increased energy and reduction of fatigue, increased metabolism and basal metabolic rate, help with weight loss, improved sleep, boost in immune function and increased mood and focus
Supplied as a 5 mg lyophilized peptide with full COA traceability
Source: Decreased Brain Levels of Vitamin B12 in Aging, Autism and Schizophrenia (2016) Remarkable improvements with B12 and folinic acid treatment
If you are tired due to low vitamin levels, then B12 might work better