If suffering from a liver disorder, theyre most likely to be prescribed and benefit from regularly taking vitamin B12 injections
Quick Take (TLDR) Mostly animal and in vitro data plus multiple very small uncontrolled human reports (knee pain case series n=16, interstitial cystitis pilot n=12, 2subject IV infusion) and no randomized controlled trials or published human pharmacokinetic profiles
A local injection-site reaction Intramuscular injections can leave the area sore, red, warm or slightly swollen for a day or two
Each finished production batch is independently tested for sterility, with lot-specific documentation and batch identification provided for full traceability
How Fast Does Vitamin B12 Work How fast Vitamin B12 works depends on the delivery method and the severity of your deficiency
It has been extensively studied for its remarkable regenerative and cytoprotective properties