b12 injection intramuscular B-12 (Methylcobalamin) Therapy Instruction Guide for Intramuscular (IM)
Description
Improved Energy Levels By boosting metabolism and ensuring the efficient use of food for energy, B12 lipo injections may help improve energy levels
14.5 nM, n = 51 (IQR 6.7 nM to 21.5 nM) and 2011

They address NAD+ depletion from opposite sides

Where Is the Best Place to Inject B12

No IGF-1 elevation side effect

In fact, a 2008 study found that after taking a 1,000 mcg oral supplement, only approximately 1.3% (or 13 mcg) of B12 was absorbed into the bloodstream
