Originally Posted by mrsD

The problem with Cytomel is that is has a very very short half life in the body.

It might be possible to get it from a compounding pharmacy who will compound it into a sustained release form. You might have better results then without raising doses so high.

Also some compounding pharmacies have natural animal gland product as well.

So check your area to see if one can accommodate you this way.

T4 is converted with zinc and selenium. Being low on either one will reduce this conversion to T3 in tissues.