b12 combined with nsa injection Compounded Cyanocobalamin (Vitamin B12) Vitamin B12 Injection: Energy Boost
Description
However, by doing your due diligence on it, you can help maximize the benefits while also avoiding any unwanted side effects if and when you decide to take it

In the UK, hydroxocobalamin is the preferred licensed form for intramuscular injection
What are the benefits

Contains no preservatives