There are some very rare side effects listed in medical literature (mostly when large doses are given): for example, one out of many thousands of patients might develop a disturbance in liver enzymes or a tingling in the fingers or toes
Numbness or tingling sensations Pain in the hands and feet Weakness or fatigue Risk Factors for Developing B12 Deficiency Neuropathy Some people are more likely to get nerve damage from B12 shortage
While diet provides enough B12 for most, some medical conditions prevent proper absorption, making injections necessary
This test measures the blood level of MMA, which the body produces during metabolism
There may be certain individuals who should avoid peptide therapy or use cautiously
(2) Heffernan M, Summers RJ, Thorburn A, Ogru E, Gianello R, Jiang WJ, Ng FM