Cytomel, too, is given
in very small amounts and increased
in small increments. After you take
cytomel, it peaks in your blood within 2-4 hours and is completely gone a few hours later; this is why we recommend taking it in split dosages. For instance, I take 10 mcg of generic cytomel/day. I take 5 mcg in the morning, with my T4 med, then around noon or 1:00, I take the other 5 mcg, so I have enough to stay with me all day.
In your case, I have to wonder if you even need the cytomel.