Olasupo Odunsi, MD, Medical Director Reviewed July 5, 2026 If you're constantly tired and your metabolism feels stuck, low B12 could be part of the problem
This means your metabolic health and your ADHD symptoms may be more intertwined than you realize
When to seek urgent medical advice : If you have already used an unlicensed peptide and experience any of the following, contact NHS 111 promptly or call 999 (or attend your nearest emergency department) in an emergency: Severe nausea, vomiting, or abdominal pain Signs of infection at the injection site (redness, swelling, warmth, or discharge) Dizziness, palpitations, or fainting Allergic reactions such as rash, swelling, or difficulty breathing (call 999 immediately for suspected anaphylaxis) Signs of serious infection or sepsis (high fever, confusion, rapid breathing, or feeling extremely unwell) Healthcare professionals are encouraged to take a non-judgemental approach when patients disclose use of unlicensed substances, focusing on harm reduction and signposting to regulated alternatives
However, the dosage may vary according to individual needs
Only then should you gauge the improvement in your anemia and overall well-being