Hydroxocobalamin, the form most commonly used in the UK, may cause: Injection site reactions (pain, redness, or swelling) Temporary reddish discolouration of urine Rarely, hypersensitivity reactions Very rarely, hypokalaemia in severely deficient patients when treatment is initiated (potassium levels should be monitored in severe deficiency) B12 injections are considered very safe, with no upper tolerable limit established, as excess B12 is excreted in urine
PubMed 22962027 TB-4 Phase 1 human safety first-in-human randomized, double-blind, single- and multiple-dose Phase 1 of recombinant human thymosin 4 in healthy volunteers, no serious adverse events: PubMed 34346165
You should always consult a medical professional if you think you are suffering from nerve damage and then work together to find the origin of the problem
Sterile water has no preservative, while bacteriostatic water contains 0.9% benzyl alcohol
This multi-receptor approach distinguishes it from existing licensed medicines such as semaglutide (Ozempic, Wegovy) or tirzepatide licensed in the UK as Mounjaro for type 2 diabetes and as Zepbound for obesity which act on fewer receptor pathways