side effect from b12 injections are there any effects Why do I feel worse after a injection: causes explained Vitamin B Complex Shot peptides Pack Size:Single – TOP 10 BEST B12 CAT Size:1000 mcg/ml - 30 ml (Pack of 1)

side effect from b12 injections are there any effects Why do I feel worse after a injection: causes explained Vitamin B Complex Shot peptides Pack Size:Single – TOP 10 BEST B12 CAT Size:1000 mcg/ml - 30 ml (Pack of 1)

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In exceptional cases, the following side effects have been observed: Blood and lymphatic system disorders: polycythemia vera

CAT

Size:1000 mcg/ml - 30 ml (Pack of 1)

Despite these promising results, research is still in its early phases, with the majority of the information coming from trials conducted in labs and on animals