Common side effects The most common side effects of Zepbound include nausea, diarrhea, vomiting, constipation, stomach (abdominal) pain, indigestion, injection site reactions, feeling tired, allergic reactions, belching, hair loss, and heartburn
B12 injections circumvent these pathways entirely, delivering the full dose directly into the bloodstream where it is absorbed with near-complete efficiency
Within a week: Improved mood and mental clarity
Fatigue, weakness, tingling, brain fog, and mood changes can be signs of low B12, yet they're often mistaken for stress or overwork
Side effects can vary, and some people may experience symptoms including diarrhea, dizziness, headaches, and heartburn after a MIC B12 injection