Synthroid and Cytomel dose

[KZL]

I have taken taken thyroid medication for 25 years and have been on 1.75 grains of Armour thyroid for a number of years. Recently it's effectiveness for me declined.  According to my Allergist and lab results (a high Antithyroglobulin Ab, but negative Thyroid Peroxidase Ab). I could be producing antibodies to the natural thyroid so he suggested a switch to Synthroid and Cytomel.  At the time I was also showing some signs of too much thyroid medication.

Dr. then put me on 150 mcg of Synthroid and 15 mcg of cytomel per day.  I ended up with WAY too much thyroid hormone in my system after 2 to 3 weeks (TSH 0.04). It was awful - rushing heart beat, couldn't concentrate or think, highly fatigued, hot all the time.  As a result, once I figured it out it was the medication, I totally went off thyroid for 3 weeks to clean out my system. Now I am having to build back up because without thyroid medication, I am still definitely hypothyroid.  Three weeks ago I started at 50 mcg of synthroid and have been increasing by 50 mcg per week.  My TSH was still high (88 this week) so I am now back at 150 mcg of Synthroid at the Drs direction. I feel much better with some T3, so I've added 5 mcg of the cytomel generic in the am.  My Dr. did a Reverse T3 test just this week that came back as 171 pg/ML (range 90-350), but didn't explain the result and whether or not I do need the T3. Very frustrated.

My question is how much synthroid and cytomel should I take to equal approximately 1.5 grains of Armour? I saw posts about the potency of T3 medications, so now understand that I was definitely overmedicated! The 150 mcg of Synthroid and 15 mcg Cytomel was way too high. Appreciate any guidance.  Am considering going to an endocrinologist.

Thank you!

[KZL]

Thanks to those who answered yesterday!