healthlinevitamin b12 injections good or bad healthline Liquid Vitamin B12: Dosage, Benefits, and More Vitamin B12 Deficiency and Weight

In conclusion, your likelihood of developing acne from vitamin B12 depends on a combination of personal and biological factors

Do You Need a Prescription For B12 Injections

Gastrointestinal Reactions (Reported/Theoretical) : Some reports suggest possible nausea or digestive discomfort, although consistent human data are lacking

So if you are told that injections are the only way, not true

Initial response time also depends on: Severity of the B12 deficiency Frequency of injections Underlying health conditions Absorption and metabolism differences If youre getting your first B12 shot, your provider may start you on a more aggressive schedule, such as weekly injections until your levels are normalized