What time of day are you taking the injections? I get this from Cyanocobolamin and Hydroxocobolamin, but not from the Methylcobolamin. Also, you might consider asking your doctor about
Hydroxocobolamin, could be you do better with a different version of B12. Some people with mercury problems or overmethylaters may not be able to handle the methyl-B12.
Chronic Lyme Disease, Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, chronic Lymphopenia, intermittant pancytopenia, chronic malabsorption/malnutrition, etc.; G-Tube; Currently TPN-dependent.
Meds: Pulmicort, IV Ceftazidime, Heparin (to flush PICC line), Claritin, Domperidone, Colloidal Silver (used topically), probiotics, homeopathy.