If you have a temporary deficiency or increased requirement (say, after a surgery or during recovery from an acute illness), you might only need a short course, perhaps a few weeks of injections, until your vitamin levels normalize or you can meet your needs by mouth again
Typical doses are as follows: Multivitamins usually contain 5 mcg to 25 mcg of vitamin B12
General Laboratory Controls No Human or Veterinary Use Do not ingest, administer, prescribe, dispense, or use for personal experimentation
Diet changes often accompany peptide use, and inadequate caloric intake can certainly cause fatigue
Mild side effects can include redness or swelling at the injection site, lightheadedness, or an upset stomach
Is the vitamin B12 injection suitable for vegans and vegetarians