Subcutaneous Injection: What It Is and How to Give One How to Administer an Intramuscular Injection at Home How to Give B12 Injections at Home to Yourself PA Relief How much BAC water should you use? It depends There is no one size fits all answer. Different vials may need different amounts of BAC water depending on how strong you want the final mix Subcutaneous vs intramuscular what's the difference? #vitamintherapy #theb12store #injection