Why Vitamin Injections Can Be More Bioavailable Than Oral Supplements When it comes to getting the most out of your vitamins, how you take them matters. Here's why vitamin injections are B12 shots versus a pill , Vitamin B12 injections are more effective than pills for quicker onset and better absorption., Benefits, Vitamin B12 is an essential water soluble nutrient vital for many B12 Methylcobalamin vs Hydroxocobalamin The difference between in clinic B12 injections vs over the counter. There are many forms of vitamin B12, the form used at La Bella is Methylcobalamin. The Danville, CA Wellness Center Compares Vitamin B12 Injection vs Oral Supplement IV Bags, IV Sets and Injection Medication Vials Tagged "vitamin B12" Mountainside Medical