does sublingual b12 work as well as injections vs. Oral Supplements: Which Is Better? Vitamin B12 Injections for Energy
Description
Here is a general timeline based on clinical experience: Week 1-2: Most patients notice improved energy levels and reduced fatigue

The rigidity made walking difficult

It is not a controlled substance, but it is also not approved as a therapeutic, dietary supplement, or anything else that would allow legal human use
While most symptoms resolve with supplementation, some developmental and cognitive problems may persist
