Dosing 5mcg Liothyronine and NDT: Hi there! I was... - Thyroid UK

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Dosing 5mcg Liothyronine and NDT

The-Wasp profile image
15 Replies

Hi there! I was recently prescribed two doses of 5mcg Liothyronine on top of my Erfa Thyroid (90 mcg in the morning and 60 in the afternoon).

I find it very difficult to go without food for long enough to squeeze in my second dose of Erfa in the afternoon. This issue has been worse for me lately as I've had to fit in other medications around it. It's kind of driving me nuts to always feel like I'm taking my thyroid medication in a suboptimal way.

Has anyone here had the same issue and resolved it?

I was planning to take the 90mcg Erfa with one of the 5mcg Liothyronine in the morning and my second dose of 60mcg Erfa with the second dose of 5mcg Liothyronine in the afternoon.

I've seen some posts on here about people taking all there thyroid medication in the middle of the night and that this saturates the receptors and actually works better for them?

Would this be completely mad in my case? I don't think the posts I saw were people on NDT.

I'm sorry... I feel like I need a lot of help lately. I try to search on the topic first, but all the types of thyroid medication are so unique so I feel unsure if the split dose is necessary. Then again, I think the T3 is completely out of your system in 8 hours so maybe this answers my own question -- unless this is in dispute?

I'm open to different philosophies and advice. I know everyone is different.

Thank you so much for any support you're able to give!

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The-Wasp
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15 Replies
DippyDame profile image
DippyDame

ERFA ia a Canadian brand of NDT

NDT comes in grains. Generally, 1 grain is 60mg and contains 38mcg of T4 and 9mcg of T3. Some brands have 65mg.

You take 90mcg/ morning and 60mcg/ afternoon

Daily NDT total 2.5 grains

NDT hormone content

T4 = 95mcg

T3 = 22.5mcg

With additional 10mcg T3. Total 32.5mcg

So, a fairly substantial dose

There is no one correct way to take the hormones because we are all different but I'm of the opinion that it's best to find the easiest way and that dosing can be made more complicated than it need be

I was planning to take the 90mcg Erfa with one of the 5mcg Liothyronine in the morning and my second dose of 60mcg Erfa with the second dose of 5mcg Liothyronine in the afternoon.

This is perfectly reasonable if it fits well into your day....it's basically trial and error!

It is also possible to take your hormones in a single dose

A number of years I tried various dosing protocols and decided on the following

I currently need 125mcg T3-only which I take in a single dose at bedtime, with no problems...I'm lucky that works for me.

I haven't used an NDT/T3 combo but I see no reason why it shouldn't work in the correct doses

Then again, I think the T3 is completely out of your system in 8 hours

Not so! The T3 remains in the serum for around 8 hours but stays in the cells for roughly 3 days and is released into the system in waves throughout the day which gives a "journey" roughly close to natural production. On the other hand splitting the dose does, in my own experience, cause more peaks and troughs....but we are all different

So, the important question is, how do you feel on this dose.

Do you have recent test results....bearing in mind that adding T3 lowers both FT4 and TSH

When you take your dose depends on how you feel.

As a very wise member here told me, years ago, "You won't know unless you try"!

It's a bit of a ramble but maybe something will resonate!

The-Wasp profile image
The-Wasp in reply toDippyDame

Wow, that was a fantastic answer and not at all rambly. Answered many of my questions that I didn't know how to articulate. I have some test results, but they are from a year ago before I started the 10mcg Liothyronine. I was thinking of doing a new test, but it may not be worth it because I might be moving to Sweden in about six months and NDT has become very political in Sweden with all sorts of bureaucratic hoops even if I go private. In short, I might need to switch to T4 and T3. Hopefully they don't force me to be on Levothyroxine for a year as the rules officially state. I've done my time on Levo (took two decades to break free) and it didn't help me much at all.

The-Wasp profile image
The-Wasp in reply toDippyDame

I just told my husband, "DippyDame is not at all dippy. She's super smart and helpful". And he said, "Tell her. When you have something nice to say, say it!"

DippyDame profile image
DippyDame in reply toThe-Wasp

Thank you ....but others might disagree!!!

I would be inclined to test now...

At 9am ( to achieve highest TSH)

On an empty stomach

At least an hour away from food and drinks

24 hrs after last T4 dose

12 hrs after last T3 dose

About 18 hrs after last NDT dose

The results will give you a baseline and will show hormone levels

Keep FT3 within ref range to avoid overmedication.....this doesn't always apply when on T3-only.

The-Wasp profile image
The-Wasp in reply toDippyDame

Hey, thanks! I agree in a way because I just started to add the two doses of 5 mcg Liothyronine and got a small headache after the second dose so I wonder if it's too much. I have the opportunity to do a thyroid test at home about a week from now but I'm taking a B Complex so I don't think there's time to go off it in time for the test?

DippyDame profile image
DippyDame in reply toThe-Wasp

Biotin is what you need to stop....about 4 days +before the test

Unless overmedicated the lio will just take time to settle.....it's not a quick fix unfortunately.

helvella profile image
helvellaAdministrator in reply toDippyDame

Most of us really don't have to panic about biotin in the sorts of doses in many B-complexes.

helvella - Biotin supplementation and testing

A short article about how and why biotin can affect blood tests. Includes information about how to avoid any problems.

Last updated 04/08/2024.

helvella.blogspot.com/p/hel...

The-Wasp profile image
The-Wasp in reply tohelvella

Thanks Helvella! You've spent so much of your time helping me these past few days. I really appreciate it 🙏

DippyDame profile image
DippyDame in reply tohelvella

Gosh! I'm not doing well today.....must be the BPPV which my GP thinks may have been triggered by my recent covid and flu vaccinations.

You do very well keeping us all on the right track

Thankyou!

helvella profile image
helvellaAdministrator in reply toDippyDame

It must be very unpleasant to have that.

I hope you find something to alleviate or at least ameliorate it for you.

DippyDame profile image
DippyDame in reply tohelvella

Thank you! Not too much fun....it's just time, rest and painkillers

The-Wasp profile image
The-Wasp in reply toDippyDame

😢

The-Wasp profile image
The-Wasp in reply toDippyDame

Yes, sounds terrible. I hope it gets better soon. Amazing you would get on here to help people when you are dizzy.

DippyDame profile image
DippyDame in reply toThe-Wasp

Thank you....it's actually easier when I'm sitting!!

The-Wasp profile image
The-Wasp in reply toDippyDame

I'm so glad something makes it better!

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