Hi, I've been on combined T4/T3 medication since December 2023 as T4 alone didn't work for me. I don't have Hashimoto's and an ultrasound of my thyroid was unremarkable. Vitamins and minerals are all optimal. My starting results prior to T3 were:TSH 0.03 (0.3-4.2)
FT4 22.2 (12-22)
FT3 3.9 (3.1-6.8)
I gradually up to 20mcg liothyrinone a day and took 75mcg and 100mcg levothyroxine on alternate days.
I quickly felt totally better, and by the start of February 2024 my results looked great:
TSH <0.01
FT4 18.5
FT3 6.0
(same ranges)
However, by the end of April, I developed fibromyalgia symptoms such as fatigue, joint and muscle aches - a general "flu-ey-like" feeling. Upon testing, I found that my FT3 had fallen to 5.1 (FT4 and TSH unchanged), so I slowly upped my liothyrinone to 30mcg which increased my FT3 to 6.7 and left me feeling totally well again.
Unfortunately, around mid-September the exact same fibromyalgia-like symptoms came back. Upon testing, my FT3 had dropped, but only to 6.2. Nevertheless, I increased my liothyrinone to 40mcg a day (and reduced levothyroxine to 50mcg) and within a couple of days felt totally better. I then went back to my original dose and the symptoms returned, so I've now reverted to 40mcg liothyrinone/50mcg levothyroxine. I felt perfectly well for a few days, but now the fibro symptoms are returning.
Can anyone shed any light on what may be happening here and advise me what to do please?
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Schilddruse
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I'suggest you have a form of thyroid hormone resistance which makes it difficult to get adequate T3 into the nuclei of the cells.
The increasing doses appear to have been helping push the hormone into the cells, but eventually proved inadequate, so symptoms returned.....until you increased again
Your current dose is 50mcg levo/T4 plus 40mcg lio/T3.
Having travelled a similar journey I suggest you need to increase your T3 again
I haven't been diagnosed with fibromyalgia, but my symptoms correspond to those of fibromyalgia sufferers.
I'm trying to determine if my recent symptoms are attributable to something that needs fixing re my hypothyroidism or whether I have some other condition in addition such as "proper" fibromyalgia.
I was diagnosed with fibromyalgia and chronic fatigue syndrome years ago which didn't help one bit
I had a similar dilemma over 20 years ago....see my bio.
Fibromyalgia is a syndrome, a collection of symptoms while a disease refers to an established condition like hypothyroidism.....which you have had diagnosed
I'm trying to determine if my recent symptoms are attributable to something that needs fixing re my hypothyroidism or whether I have some other condition in addition such as "proper" hypothyroidism.
Not sure where your thoughts might have come from but they are unlikely to be helpful...sorry!
There is only "proper hypothyroidism"
Hypothyroidism, also called underactive thyroid, is when the thyroid gland doesn't make enough thyroid hormones to meet your body's needs
Suggest you read a little about Dr John Lowe fibromyalgia researcch in the link above, or books from this list
After a diagnosis of hypothyroidism you need replacement thyroid hormone for life
It sounds as if you need a dose review, you are likely still undermedicated as the improvement/ then return of symptoms, suggest.
If testing protocol was correct your pre-T3 labs appear to show very poor conversion...it looks as if you need at least 40mcg. ....likely more. The dose must be consistant for it to work.
You may also need to further reduce your T4....it was originally on the high side due to poor conversion.
Have you optimised vit D, vit B12, folate and ferritin to support thyroid function?
I am not keen on the diagnosis of fibromyalgia - in my view, it is a lazy diagnosis, as physicians like to put a label on something they cannot explain or have no clue what the real reason could be.
How are your vitamin and mineral levels? We always suggest to test your iron, Vitamin D, Vitamin B12 and folate levels. If any of these are low or not optimised, the thyroid hormones will not work properly and therefore you can experience symptoms.
Many people are deficient or low in Vitamin D, especially now that we are entering the winter period. In addition, the daily recommended allowance for Vitamin D3 are too low to replenish your store if it is low or if you are deficient. Once you know where your levels are, you can start supplementing to bring them higher in range (doses up to 4000IU daily are considered safe). Most aim for levels between 80 and 100 nmol/l. You should also take Vitamin K2 with the Vitamin D3, so the calcium from your diet gets directed to your bones, and take a good magnesium supplement as well, as this helps with the absorption of Vit D3. Many people are deficient in Magnesium, which is an important mineral for energy and has many functions in our body.
We always advice against taking multivitamins, as they contain cheap ingredients, have too little of the vitamins you need and too many other ingredients that are not needed. Many also contain iodine, which is not recommended for hypothyroid patients and iron, which prevents the absorption of the other nutrients.
In the UK, you can do private testing or can ask the GP for a blood test to assess these key nutrients. Where are you based? Just wondering if its Germany due to your handle
Hi, I'm in the UK. I've had my vitamins and minerals tested several times and they're all optimal. I supplement with Better You Vitamin D3/K2 and Thorne Basic B Complex.
Hi again, good to see that your Vitamins and minerals are optimal.
I am not an expert on T3, but there are some members that are taking a very low dose of levothyroxine and a higher dose of T3, others are taking high doses of T3 only. It could be that you may be heading in that direction and that you may end up on T3 only?
I have found a blog by Paul Robinson, which some members have commented on before with regards to T3, he is obviously keen to flog his books, but some of the blogs may give you some pointers perhaps?
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T3 levels never change / got worse on levo
Results going up and down advice please
further advice on blood results 
Doctor says I am hypo and hyper at the same time
Can anyone have a look at these test results on T3/T4 please?
