b12 injection and vitamin d together B12, & Wellness Add-Ons Why Vitamin Injections Are a

Subcutaneous injection is the most common research-context format today, but no published human pharmacokinetic study has formally characterized subcutaneous AOD-9604 (this gap was specifically called out in FDA's December 2024 review)

The synthetic chemical, cyanocobalamin, is not easily absorbed by your body, but methylcobalamin is

The 5-minute injection adds no meaningful time to an existing appointment convenient same-visit add-on

A 1mg dose equals 0.05mL or 5 units

Nutrient support: This helps address potential nutritional deficiencies, particularly if you are consuming fewer calories or eating less overall, ensuring your body still receives the essential nutrients it needs

The standard starting course usually involves 1mg injections three times a week for two weeks