Tag: T3

T3 (Liothyronine sodium) and T4 (Levothyroxine sodium) are both thyroid hormones, but they differ in potency, half-life, and how the body uses them. T4 (Levothyroxine sodium) Full name: Levothyroxine sodium (synthetic thyroxine) Role: A prohormone — it is converted in the body into T3, the active form Potency: Much weaker than T3 Half-life: Long (~7

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