No - most of us that take T3 medication take one dose in the
morning with our T4 medication (if you
take that
in the
morning), then
take the second dose about noon or early afternoon. It's typically, not recommended to take T3 after about 3:00 pm because it can interfere with sleep. Another thing is that you're taking a larger dose in the morning and it kicks in quickly, but since T3 is fast acting, it's worn off before you take that 6:00 dose.