Sorry to hear you don't have other thyroid med options. I've heard this many times that many do not convert the T4 to T3 in their bodies...the desiccated supports contain both.

At one point I did take the T4 and doc added T3 synthetic, but I found over trial and error I do best with armour types. Look at magnesium to help with your chronic constipation. I went thru nasty constipation for a lot of my life and make sure I get Enough mag, dosing thru the day. Best forms are citrate or glycinate....