vitamin b12 tablets vs injection

I am develop B12 injection allergy after 4 month B12 injection. What I can do? Size:1000 mcg/ml - 30 ml (Pack of 1) If you’re doing IM injections in your thigh, do the right thigh first, then the left thigh https://lookaside.instagram.com/seo/google_widget/crawler/?media_id=3924357628989916184 Vitamin B12 Deficency

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