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reaction to b12 injection uk Vitamin shot Why Do I Feel Worse
Description
Take Back Control of Your Wellness Today

What to expect after your B12 booster After your injection, you may notice: Improved energy and alertness within 12 days Brighter mood and better focus Enhanced motivation and productivity Healthier skin tone over the following weeks These effects typically build gradually as your vitamin levels stabilise

In short, the only way to tell is to test your ferritin levels and do a full iron panel

doi: 10.1111/j.1460-9568.1993.tb00221.x