Vitamin B12 Injections: What You Need To Know Tired, foggy or feeling run down?, You might be low in vitamin B 12. We now offer B12 injections at our Mold and Chester clinics administered by a qualified podiatrist and prescribed individually by Tired of feeling tired? Low energy and brain fog could be signs of low Vitamin B12. Our private B12 Injection Consultation helps support energy, focus, and overall wellbeing. Find out more Why Do I Feel Worse After My B12 Injection: 6 Body Reactions Feeling Tired All the Time? It Might Be a Vitamin B12 Deficiency Fusion HealthCare