b12 injection at night 5 Immediate Health Benefits of Shots - Elevated Health Benefits of Vitamin B12 Shots

Guideline 6: Special Population Considerations When figuring out B12 injection dosages and how often to give them, special groups need special care

Mild side effects can include short-term injection-site redness and very rarely transient mild headache in the first week

Western blot analysis Gastrocnemius homogenates were prepared in a non-denaturing buffer (2% Triton X-100, 300 mM NaCl, 20 mM Tris (pH 7.4), 2 mM EDTA, 2 mM EGTA, and 1% NP-40) containing the following phosphatase and protease inhibitors: 1 mM PMSF, 10 uM leupeptin, 38 uM aprotinin, 1 mM phenanthrolin, 1 uM pepstatin, 1 mM sodium fluoride, and 200 uM sodium vanadate

And like you say, the B12 might not be the cause

Sold for research use only