I'm on T3 only for 6 weeks, the dose is 12,5 mg ( still can't tolerate more, have extremly strong palpitations). But i am very disappointing with the blood work results. I have no idea what to think .
March 2017
FT3 4.27 ( 2.3 - 7 )
FT4 11.3 ( 10.2 - 24.5 )
TSH 8.23 ( .35 - 5.50 )
At that moment i was on nothing ( stopped my T4 supplement in December)
May 2017
FT3 2.38 ( 2.43 - 3.98)
FT4 0.66 ( 0.8 - 2.10)
TSH 4.86 ( 0.27 - 4.2)
I understand that my FT4 dropped because of T3 i take. But why my FT3 dropped also? I have no idea what to do - try to add more T3? Or stop it as something goes wrong?
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HelgaW
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Your palpitations could likely be due to be under medicated. I'm on T4/T3 combination and I only get palpitations when my T3 is too low.
You might also be reacting to fillers, have you done the antihistamine test to rule that out?
12.5 mcg is a pretty small dose, and according to your test results you need an increase. Do you mind me asking why are you on T3 alone? Did you have an issue with T4?
Your T3 dose probably isn't enough to replace the dose of T4 you were taking. What was your T4 dose?
Since your FT3 is lower now, then it makes sense you're getting palpitations. Your results for FT4/FT3 were better on T4 alone, even though you were still under medicated.
I would say you either need to raise T3 or add some levo to your dose.
Just read that you get palpitations when raising dose. Sorry I missed that previously. I also had the same issue when starting T3. Dose splitting dose help. Eventually my palpitations went away when I adjusted to the higher dose.
Oh ok I think we're starting to understand what happened here. Generally it is recommended to wait only 12 hours between T3 and bloods, maximum 24 hours. If you wait 24 hours you have to add 20% to your FT3 result to estimate what the levels normally are after dosing. In your case you waited so long that your levels are superficially low.
You're welcome! I think that would be a good idea. From my understanding it would help lower your RT3, definitely get the RT3 retested in about 2 months. At that point based on your results and symptoms it could be a good time to try reintroducing levo.
It's possible that the addition of T3 to levo would correct the weight gain without the need of stopping levo. Usually T3 mono-therapy is a last cast scenario when nothing else works. Weight problems are usually due to low FT3, not to the levothyroxine itself. Unless it could be something to do with the fillers in a specific brand or tablet. Or a formulation of levothyroxine that isn't well tolerated, as in your case leading to under-medication.
Ohh, so my decision regarding T3 only therapy supposedly was wrong. And what do you think about RT3? As it was high i decided to take T3 only for a while. And i have quite proper ferritin after IV infusion, so it couldn't be the cause of high RT3.
I wouldn't say it's wrong. From my understanding when someone has high RT3 the correct treatment is a course of high dose T3 until RT3 comes down. Personally I have no experience with it since I've never even had my RT3 tested.
Once you can correct RT3 and can increase your FT3 level you should get help with symptoms and weight issues too, I wouldn't rule out T4 completely at that point. Even if it means trying NDT or adding levo to T3. Some people add levo to NDT as well. Then again T3 alone works best for others, I just think it's best to exhaust your options to know what is best for you, but don't equate T4 to weight gain cuz it's usually something else going on (like low FT3), which levo mono-therapy often can't correct.
How much Levothyroxine were you prescribed before you stopped taking it?
As you stopped T4 in December high rT3 will almost certainly have cleared now. You are under medicated on 12.5mcg T3. The palpitations may be due to under medication. I suggest you split your T3 dose into 2 x 6.25mcg doses 8 hours apart to see whether palpitations improve and if you can't tolerate more T3 consider adding 25mcg Levothyroxine.
Your FT3 has dropped because you are undermedicated - that's probably also why your FT4 has dropped. Palpitations happen because of undermedication as well as over. Perhaps you need levo plus T3 or NDT.
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