is it safe to have b12 injections Feeling worse after Injection: Answering concerns Best Vitamin B12 Injection Sites

If the patient is suspected to be sensitive to cobalt or other components of cobalamin, an intradermal test dose is recommended.[12][15] Several laboratory tests should be performed prior to treatment with cyanocobalamin, including serum vitamin B12, folate, iron, hematocrit, and reticulocyte count

You should try to get your next shot early enough to avoid reoccurrence of symptoms

General Safety & Handling Not for Human Use These compounds are for research only

What should I bring when getting B12 shots

Best Applications for (GHK)-CU This variant is primarily relevant for those formulating their own products or evaluating commercial products that list the specific ratio