There is an open access article that you can download and show to your doctor: Effects of Long-Term Combination LT4 and
LT3 Therapy for Improving hypothyroidism and Overall Quality of Life, by Anam Tariq, et al.
[NOTE: In this group, we usually discuss T3 and T4 or FT3 and FT4 (F="Free"). The authors added the "L" for "Levo" which describes the molecule of the treatments they were using.]
Key Points
• Even after years of levothyroxine monotherapy, some patients
believe that they still have an impaired quality of life.
• The meta-analysis of combination therapy has been negative for
combination therapy in managing hypothyroidism, and the data
reported on some general well-being questionnaires also are
inconclusive.
• Low levels of 25[OH] vitamin D, vitamin B12, and hemoglobin
were checked in our study to rule out other causes of fatigue
and hypothyroidism before starting combination therapy because
they have not been ruled out in previous literature.
• In our population, the symptoms of hypothyroidism improved
significantly as reported on follow-up encounters with subsequent
improvement in laboratory thyroid function studies and questionnaires,
and furthermore, not resulting in hyperthyroidism that
caused hospitalizations for medication adverse effects, arrhythmias,
or cardiac death.
You can download a PDF of the entire article here: ncbi.nlm.nih.gov/pmc/articl...