We advise readers who purchase our B12 product to inject SQ, because IM shots can be painful and may discourage self-injection
That said, outside of certain sensitivities, allergies, or medical conditions, it's extremely difficult to take "too much" vitamin B12
Oral AOD 9604 formulations exist but have significantly lower bioavailability than subcutaneous injection
Cobalamin forms in plasma and tissue during treatment of vitamin B12 deficiency
Vasc Pharmacol 106:5466 Wada-ama.org
A formula listed with an asterisk * indicates that this is available per the discretion of our Nurse Practitioners who are looking at whether you have any risk factors that would make this not the best idea at this time (ex: pregnant, nursing, or have certain kidney or cardiac disorders.) Vitamin injections can help to support your overall health and wellness journey