overdose of vitamin b12 injection How Long Does a Shot Last In Your Body? Vitamin B12 - An Overview

For example, a doctor might prescribe the following: 100 micrograms daily for about a week Followed by every other day for seven doses After that, every three to four days for two to three weeks Once monthly until the deficiency is treated B12 injections require a prescription and can be administered at a doctor's office or at home with the approval of a healthcare provider

Such patients often are prescribed supplemental B

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Laboratory Testing Before starting Vitamin B12 injections, laboratory testing is often recommended to determine your baseline B12 levels and to monitor your progress

Anyone over the age of 18 may benefit from the beneficial properties of vitamin B12 injections