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AllergyNet Adverse reactions to vitamin B12 injections due to benzyl alcohol sensitivity successful treatment with intranasal cyanocobalamin S
Cost: shots vs pills In-clinic injections add visit fees
So stocking up on B vitamins in one sitting doesnt do us any good the next day
Usually, nausea is mild and goes away after a short time
Underlying conditions: digestive disorders like Crohn's or celiac disease, or autoimmune conditions, can cause you to use up B12 faster and may call for more frequent injections
This is where the question How Long Does a Vitamin B12 Shot Last
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