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Generally, individuals can expect to experience the effects of a B12 injection for several days to a few weeks before requiring another dose
Dosage or frequency: you may need an adjusted schedule
Sleep: Tryptophan is the amino acid found in food that makes you sleepy
Deficiency vs
If it is related to diet, you can get an injection every six months, or manage it through a daily oral supplement
Cyanocobalamin works fine in many clinical contexts (and is the standard for injections), but as a daily supplement for long-term optimization, methylcobalamin is more direct and more commonly preferred by performance-oriented clinicians
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