While testosterone helps build muscle and improve physical strength, B12 ensures your body has the fuel it needs to maximize those benefits
PubMed laboratory research record [PMID: 945709] PubMed record related to this compound for laboratory literature review
Common signs of B12 deficiency include: Persistent fatigue that doesnt improve with rest Difficulty concentrating or brain fog Mood changes, including low mood or irritability Tingling or numbness in the hands and feet Weakness or shortness of breath with normal activity Pale skin or a smooth, swollen tongue B12 deficiency can develop silently for months before symptoms become noticeable, which is why its frequently missed
In this situation, it can be challenging to demonstrate B12 deficiency even when there are typical symptoms (including neuropathy-like paraesthesia and numbness), as serum B12 concentrations may be just within, or sometimes above, the normal range due to the oral supplementation
If tiredness and weakness start creeping back, its worth booking a b12 injections after fatigue blood test to check your levels again