I take b12 injections for a deficiency. If you are not deficient you literally just pee it out. As far as the MIC composition I have never seen it do anything great or worth while. You will know if you should continue by observing your energy and we'll being up to 72 hours after your injection. Lots of people are b12 deficiency and don't know. You will have more energy because you need it or you won't and it's a waste.
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