best to inject b12 subcutaneously or intramuscular Choosing the Right Needle and Syringe for Injections: A Complete Guide B12 Injections for Energy: Benefits
Description
[22] [18] Pseudovitamin B 12 is the majority corrinoid in spirulina, an algal dietary supplement sometimes erroneously claimed as having this vitamin activity

Product seems legit

B12 injections can help with nerve pain, weight loss, energy, brain fog, muscular pain, and cramps

It does one thing well - enhances fat mobilization and oxidation without affecting blood sugar, hormones, or appetite

Low Vitamin B12 and Lipid Metabolism: Evidence from Pre-Clinical and Clinical Studies
