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    L-Thyroxine is the generic form or chemical name for levothyroxine or
    T4. The “levo” refers to its chemical structure and refers to it being
    drawn facing left as it is described in organic chemistry books. There
    is also a “dextro” or right facing thyroxine. I’m not sure, but they
    may be involved in different chemical reactions in the body. Both are T4
    and are less active than T3.
    You need to document your symptoms so that you’re doctor can follow through.
    They do not like to give out Armour thyroid because the pills could vary in
    potency. Hope this info helps.
    NGDF has a list of hypothyroid symptoms which is useful to track your symptoms
    while you’re on replacement therapy.
    Gooood Luck!!! :)