b12 injection does it hurt How Often Should You Have Injections? What happens if you inject

24 Patient experiences Data from a review of patient experiences and surveys involving more than 2200 patients with B 12 deficiency in the UK indicate that many patients have concerns related to healthcare quality, safety, and treatment, 62 63 64 with nearly two thirds of respondents reporting that their treatment is insufficient to manage symptoms

Endocrinol Metab Clin North Am

[DOI] [PubMed] [Google Scholar] 228.Larsen TM, Toubro S, van Baak MA, Gottesdiener KM, Larson P, Saris WH, et al

Minor bleeding indicates only minor capillary contact and does not affect treatment safety or efficacy

But the probability is very low as the polysorbate allergy is very rare