If you are low in B12, consider one or all 3 of the active B12 forms to ensure your cells have access to the most bioidentical forms available (hydroxocobalamin, adenosylcobalamin, methylcobalamin)
Some people may experience mild redness or swelling at the injection site, and know that serious side effects are rare
Health.com
Found Naturally : Vitamin B12 is found naturally in many foods, including meat, fish, poultry, eggs, and dairy products
General Safety & Handling Not for Human Use These compounds are for research only
Hydroxocobalamin is longer-acting and stays in your system longer, making it ideal for more sustained energy between appointments