[5] Disruption of these pathways leads to accumulation of homocysteine and methylmalonic acid, metabolic signatures linked to megaloblastic anemia and demyelinating neuropathy
Call your health care provider immediately if you are experiencing any signs of an allergic reaction: skin rash, itching or hives, swelling of the face, lips, or tongue, blue tint to skin, chest tightness, pain, difficulty breathing, wheezing, dizziness, red, swollen painful area on the leg
Mild nausea and digestive discomfort Some users report mild nausea, particularly when injecting on an empty stomach first thing in the morning
Can B12 injections cause fatigue initially