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While theres no definite cutoff for when B12 starts to become unsafe, because people often ask, well somewhat arbitrarily say not to take more than 1,000 g per day over the long-term without guidance from a physician
Lower doses become harder to measure precisely
Bacterial endotoxins in poorly manufactured peptides can cause fever, inflammatory responses, and in severe cases, septic shock
Injection site reactions Mild redness, swelling, or itching at the injection site occurs in a subset of users
Clinical reviewer Clinically reviewed by Faisal Shafiq, Superintendent Pharmacist, GPhC 2067224
05 Roll, do not shake Roll the vial gently for 30-60 seconds until the powder dissolves
