after I moved onto 50g Levothyroxine I developed numbness in my lips and this is slowly spreading. My doctor is treating it as an unrelated and separate symptom to the hypothyroidism and due to excess B12 in my system. They've done thorough checks for anything else that would cause it and have now decided it belongs in the 'we have no idea' category of symptoms. Is ther any possible connection between this numbness and either the hypothyroidism or Levothyroxine? I'm now on 75g per day and am still tired.