New to T3, advice please : Hello there, help... - Thyroid UK

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New to T3, advice please

Sammy333 profile image
22 Replies

Hello there, help please! Results listed below....I have always been symptomatic with Hashimoto's, diagnosed 2019. Was on just levo for years but after DIO2 testing and conversion rate of t4 to t3 being low I was started on a trial of T3 in march 2023. I always have blood testing between 8am and 9am. I take my last dose of levo the day before bloods (24hrs) and my last t3 by lunch time (20hrs). I supplement with 210mg iron, plenty of magnesium, vitamin D and B supplements, I tend to stop these a couple days before my thyroid bloods and take them away from my meds. I take 2-3 mls of low dose naltrexone (LDN) daily, I'm gluten free for one year and working on dairy free. I constantly feel under the weather with lymphatic tissue in throat causing lumps which have been raised for a year or so. I wake up daily with a sore throat. Lately my symptoms are leading to daily tears and feeling like I have no quality of life so I'm really hoping for some support with my labs to help me figure out if I can tweak my dosing. I will post my last 4 blood results with dosage regimen. Other symptoms I have are achy neck, achy lower back, achy calves, a general unwellness where I feel I have to take paracetamol or ibuprofen. I have a query diagnosis over chronic fatigue/long covid but I suspect my symptoms are low immune system related and inadequate dosing. I am managing one very slow yoga stretch class a week but I feel very unwell dragging myself there. The only relief I get is two hours after waking , an ice cold swim in the local lake or an epsom salt bath. I cant really carry on like this as its really affecting my mood now. My weight is 66.7kg currently. Thankyou in advance...

24/03/23 Last few months before this blood test I was taking between 100-125mcg levothyroxine......

THS 3.820 (0.27-4.20 ml/UL)

FT4 17.22 (12-22 pmol/L)

FT3 3.6 (3.1-6.8 pmol/L)

TPO 286 (0-24 IU/ml)

02/05/23 Taking 75mcg levothyroxine and 2x 5mcg liothyronine led to this result....

TSH 0.874 (0.27-4.20 ml/UL)

FT4 18.71 (12-22 pmol/L)

FT3 4.1 (3.1-6.8 pmol/L)

19/09/23 Taking 50mcg levothyroxine and 3x 5mcg liothyronine

TSH 1.650 (0.27-4.20 ml/UL)

FT4 14.70 (12-22 pmol/L)

FT3 4.1 (3.1-6.8 pmol/L)

Felt horrendous at this point and figured i probably should'nt have dropped my levo to 50mcg

03/11/23: Taking 75mcg levothyroxine and 3x 5mcg liothyronine

TSH 0.704 (0.27-4.20 ml/UL)

FT4 14.10 (12-22 pmol/L)

FT3 4.7 (3.1-6.8 pmol/L)

TPO 166 (0-24 IU/ml)

So currently I'm still taking 75mcg levothyroxine and 3x 5mcg liothyronine daily. I'm not sure what the best way to take this dosage is in regards to timings. I feel like the t3 is helping but something isn't quite feeling right... Is it normal for my t4 to drop when taking t3and is this significant? At what point will I know I'm taking on board the right dose of T4/T3. Would a reverse T3 blood test show me anything? I'm a little lost in all this! Maybe I need to increase my T3? Its helped my hair grow which is a bonus :)

Sammy xx

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greygoose profile image
greygoose

I take my last dose of levo the day before bloods (24hrs) and my last t3 by lunch time (20hrs).

20 hours is much too long between last dose of T3 and the blood draw. It Should be 8 to 12 hours. So, you are getting false lows for the FT3.

I supplement with 210mg iron, plenty of magnesium, vitamin D and B supplements

Do you take them all together? If so, you won't be absorbing much.

Is it normal for my t4 to drop when taking t3

Yes, that's what happens.

At what point will I know I'm taking on board the right dose of T4/T3.

When you start to feel well. Sounds like you're quite a way off that point at the moment.

Would a reverse T3 blood test show me anything?

It would show you the level of your rT3. But that wouldn't help you in any way. It's very expensive and not worth doing.

What you need to do next is a correctly done blood test:

- leave 24 hours between last dose of levo and blood draw

- leave 8 - 12 hours between last dose of T3 and blood draw

- Have the blood draw before 9 am, before breakfast. Just drink water.

Then you will have a better idea of what to do next. :)

Sammy333 profile image
Sammy333 in reply togreygoose

Thankyou, thats useful to know re the RT3.

Do I take all my supplements together... no, i space them adequately away from medication.

Leave 24hrs between last dose of levo and blood draw... I do

T3 affects my sleep so I never take it 8-12hrs before a blood draw as that's not how I normally dose? Perhaps I should look at changing my routine... so maybe take cytomel 3 times daily every 8 hours?

I have the draw consistently between 8and 9am and don't eat or drink before. So the only thing off here is the time I take my last dose of T3. I was hoping these last 4 blood draws might provide a little insight at least as to how I'm feeling. Especially as I'm comparing them to when I never took any T3.

greygoose profile image
greygoose in reply toSammy333

Well, it depends on your true level of FT3. If it's still low, if you're not absorbing it very well, that would account for you not feeling good. But, as I said, the results you have are false lows.

Do I take all my supplements together... no, i space them adequately away from medication.

That wasn't what I meant. I meant do you take the iron with the b vits and magnesium? Iron should be taken at least two hours away from everything except vit C. And you need to take vit C with it to help with absorption. It should be four hours away from thyroid hormones.

so maybe take cytomel 3 times daily every 8 hours?

I doubt that's necessary on a daily basis. But maybe the day before the blood test? So, if you have the blood draw at 8 am, take your last dose at 8 pm the day before.

Could even be that you need to take your T3 all in one go. Some people do.

Sammy333 profile image
Sammy333 in reply togreygoose

Ok next labs ill T3 dose at 8pm.

I tend to take vit C and iron at lunch, D in early aft and Magnesium before bed.

Ok so its trial and error with T3, thankyou.

greygoose profile image
greygoose in reply toSammy333

You're welcome. :)

TiggerMe profile image
TiggerMeAmbassador

Hi Sammy, bit too long a gap after T3 we usually work on 8 hours after last dose and 24hrs after T4.... even so here are your results as a percentage...

Free T4 (fT4) 14.1 pmol/L (12 - 22) 21.0%

Free T3 (fT3) 4.7 pmol/L (3.1 - 6.8) 43.2%

It is quite normal for fT4 to drop when adding T3, generally keeping it above 50% for combi therapy is a starting point, your fT3 is a false reading so maybe around 50%+ after 8 hours , I feel dreadful when my fT4 drops below 50% (I'm of the wonky DIO2 persuasion) even with T3 😕

I'd suggest you increase T4 to 100mcg either by adding 25mcg if you can or stepping up by 12.5mcg a day to start with... some struggle more than others when changing dose

Retest after 8 weeks and see how things are looking 🤗

Dosing T3 is trial and error, I find one morning dose works better than splitting, others leave 8 hour gaps

Have you any results for Ferritin, B12, Folate, Vit D etc?

Cold water swimming might feel great but its putting a huge strain on your adrenals which likely leaves you feeling pretty drained later?

What is your resting heart rate, BP and temperature looking like?

Sammy333 profile image
Sammy333 in reply toTiggerMe

Hello, thankyou so much for your response.

I have started to feel bad with t4 dropping so that makes sence with what you say. But if I now up my t4 to 100mcg will I not be overdosing with the additional 3 lots of 5mcg T3? I will happily try that though.

Can you explain the maths to work out the percentages you came to there?

My resting HR is 69, BP 111/68 and temp is 36.

My 25OH vitamin D is 96 nmol/L

Ferritin was 35ug/l a few weeks ago but I am now supplementing 210mg daily to get it up.

Active B12 74pmol/L

Folate 4.9ug/L

The cold water takes everything away pain wise but yes I do feel refreshed but sometimes more tired later. I was hoping it might help my immune system improve.

Thanx :)

TiggerMe profile image
TiggerMeAmbassador in reply toSammy333

Unlikely that raising your fT4 is going to have much of an effect on your fT3 as you are a bad converter but even if it raises your fT3 a little you have headroom for that being that your fT3 is around 50-60%

The percentages are care of this really handy page that one of our members husbands constructed to level out the various lab ranges... thyroid.chingkerrs.online/

Vit D is good

Ferritin low, presumably GP ran a full iron panel before giving you Ferrous Fumerate? Which tends to be hard on the stomach and not well absorbed 😕but it's cheap! Many of us have used Three Arrows Simply Heme as it is well tolerated and absorbed

Active B12 could be better I think top of range is 150? So over 100 would be good

Folate very low... that'll make you feel crappy too. Which range is that on? Some top at 20 others 60 either way above mid range is the aim.

Suggest adding a good B Complex to your list, take before lunch as can be stimulating... Thorne Basic B or Igennus Super B Complex... just noticed you already take a B Complex, you'll need to add a separate methylfolate to bump it up, perhaps your complex is folic which isn't as usable?

It's good to do things you enjoy but us hypo's tend to run on the cold side like you at 36 so your body will have to work really hard during and after the cold water swimming 🥶which drains your adrenals even more

Chat about ferritin supplements...

healthunlocked.com/thyroidu...

Sammy333 profile image
Sammy333 in reply toTiggerMe

Hello Eeyore, thanx again :)

But what about my TSH if I raise my Levo by 25mcg to 100mcg and stick with 3x 5mcg T3? Would it not make me go hypo. I agree I deffo need to increase my t4… but I’m scared of dropping the t3!

My Gp hasn’t advised I start high dose iron… I just started it as I saw it was 30ish. Is it more sensible to get my full panel first?

folate range literally says above 2.5 is acceptable 🤣 Is that like the bare minimum to survive or something 🙃

That’s interesting re the dipping. I did one a day in October for charity and it was exhausting but exhilarating 😂

Thankyou for the info on b complex and active form…. Need to look into that x

TiggerMe profile image
TiggerMeAmbassador in reply toSammy333

Most of us have under range TSH when we start on T3 so I wouldn't worry too much about that, what is important is that your frees are in a good place for you.... you can't go hyper just over medicated and you are a way off that

I'd suggest adding the 25mcg T4 and keep T3 doses as is

You don't really want to be taking iron without the full iron panel as it is possible to be high in iron and low in ferritin 😵 and too much is as bad as too little, complicated stuff iron

Folate yeah you can survive on 2.5 but you'll feel really 💩

How about getting a winter wetsuit🤗

Sammy333 profile image
Sammy333 in reply toTiggerMe

typo in my recent reply!!! *would it not make me go hyper 😂

helvella profile image
helvellaAdministrator in reply toSammy333

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SlowDragon profile image
SlowDragonAdministrator

03/11/23: Taking 75mcg levothyroxine and 3x 5mcg liothyronine

TSH 0.704 (0.27-4.20 ml/UL)

FT4 14.10 (12-22 pmol/L)

FT3 4.7 (3.1-6.8 pmol/L)

Was this test 6-8 weeks after being on 75mcg levothyroxine

Which brand?

Many (most?) people on levothyroxine/T3 find they need BOTH Ft4 and Ft3 at least 60-70% through range

Ft3 was false low as too long before test

Day before test take last dose T3 at 8pm - 10pm

You should find you can slowly increase spacing of 3 doses of T3

So that eventually you might even be taking last dose T3 at bedtime

Try taking waking, noon and 6pm

Slowly try increasing gap to roughly equal 8 hour intervals

Ferritin is obviously terrible. Probably exacerbated by inappropriate reduction in levothyroxine

Folate also far too low

Exactly What vitamin supplements are you taking

As you have Hashimoto’s are you on strictly gluten free diet and/or dairy free diet

Sammy333 profile image
Sammy333

Was this test 6-8 weeks after being on 75mcg levothyroxine.... Yes 6 weeks

Which brand? TEVA

Day before test take last dose T3 at 8pm - 10pm OK Thankyou

Ferritin is obviously terrible. Its always been crap... between 10 and 30ish. Will try hard to get it up. What level is desirable?

Folate also far too low... I thought 4.9 was in range, what do you recommend? Gp says above 2.9 is ideal.

Gluten I am 95% free.

Dairy I am lactose free but struggle to not have cheese :/

I take LDN, IRON, MAGNESIUM, VIT D, VIT B COMPLEX, VIT C, COQ10, NAC sometimes, ginko biloba, melatonin at night. Some reiki mushroom sometimes. A probiotic.

Paracetamol/ibuprofen as needed, may move onto naproxen.

I'm rattling

in reply toSammy333

Just to jump in and say my ferritin has always been pitiful too and iron supplements always upset my digestion!

I’m currently trying iron patches which were recommended to me here, not sure if they’re working as haven’t tested yet but may be worth a try!

TiggerMe profile image
TiggerMeAmbassador in reply to

I'm thinking the lady that was trialling iron patches reported back that her levels had dropped whilst using them... can't remember who it was 🤔

in reply toTiggerMe

Gaah, oh no! I did wonder if they were too good to be true! 😱

TiggerMe profile image
TiggerMeAmbassador in reply to

I'm thinking catpurple7 has been using the patches lets get an update from her... don't think that was the person who didn't get on with them though 🤔

TiggerMe profile image
TiggerMeAmbassador in reply to

Can you remember who was using them? It just isn't coming to me and was probably hidden in a thread about something else as we tend to wander 😏

in reply toTiggerMe

Haha! No I’m sorry I can’t remember now either. I think Slowdragon linked me to a post about them a few months back but can’t seem to find it now 🤦‍♀️

SlowDragon profile image
SlowDragonAdministrator in reply toSammy333

you need to click on blue reply button of other poster ….or they aren’t notified of your reply

which brand on vitamin B complex

How long before test did you stop taking it

IMPORTANT......If you are taking vitamin B complex, or any supplements containing biotin, remember to stop these 7 days before ALL BLOOD TESTS , as biotin can falsely affect test results

endo.confex.com/endo/2016en...

endocrinenews.endocrine.org...

In week before blood test, when you stop vitamin B complex, you might want to consider taking a separate folate supplement (eg Jarrow methyl folate 400mcg)

Post discussing how biotin can affect test results

healthunlocked.com/thyroidu...

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

SlowDragon profile image
SlowDragonAdministrator

iron and ferritin

Are you vegetarian or vegan

Do you eat plenty of red meat

cks.nice.org.uk/topics/anae...

Serum ferritin level is the biochemical test, which most reliably correlates with relative total body iron stores. In all people, a serum ferritin level of less than 30 micrograms/L confirms the diagnosis of iron deficiency.

Never supplement iron without doing full iron panel test for anaemia first and retest 3-4 times a year if self supplementing. It’s possible to have low ferritin but high iron

Test early morning, only water to drink between waking and test. Avoid high iron rich dinner night before test

Medichecks iron panel test

medichecks.com/products/iro...

Look at increasing iron rich foods in diet

Eating iron rich foods like liver or liver pate once a week plus other red meat, pumpkin seeds and dark chocolate, plus daily orange juice or other vitamin C rich drink can help improve iron absorption

List of iron rich foods

dailyiron.net

Links about iron and ferritin

irondisorders.org/too-littl...

davidg170.sg-host.com/wp-co...

Great in-depth article on low ferritin

oatext.com/iron-deficiency-...

drhedberg.com/ferritin-hypo...

This is interesting because I have noticed that many patients with Hashimoto’s disease and hypothyroidism, start to feel worse when their ferritin drops below 80 and usually there is hair loss when it drops below 50.

healthunlocked.com/thyroidu...

Posts discussing Three Arrows as very effective supplement

healthunlocked.com/thyroidu...

healthunlocked.com/thyroidu...

Iron patches

healthunlocked.com/thyroidu...

Thyroid disease is as much about optimising vitamins as thyroid hormones

healthunlocked.com/thyroidu...

restartmed.com/hypothyroidi...

Post discussing just how long it can take to raise low ferritin

healthunlocked.com/thyroidu...

Iron and thyroid link

healthunlocked.com/thyroidu...

Posts discussing why important to do full iron panel test

healthunlocked.com/thyroidu...

Good iron but low ferritin

healthunlocked.com/thyroidu...

healthunlocked.com/thyroidu...

Chicken livers if iron is good, but ferritin low

healthunlocked.com/thyroidu...

Shellfish and Mussels are excellent source of iron

healthline.com/nutrition/he...

Iron deficiency without anaemia

healthunlocked.com/thyroidu...

Ferritin over 100 to alleviate symptoms

healthunlocked.com/thyroidu...

healthunlocked.com/thyroidu...

Great research article discussing similar…..ferritin over 100 often necessary

ncbi.nlm.nih.gov/pmc/articl...

Low Iron implicated in hypothyroidism

healthunlocked.com/thyroidu...

Ferritin range on Medichecks

healthunlocked.com/thyroidu...

Inflammation affecting ferritin

healthunlocked.com/thyroidu...

healthunlocked.com/thyroidu...

We have received further information the lab about ferritin reference ranges. They confirm that they are sex dependent up to the age of 60, then beyond the age of 60 the reference range is the same for both sexes: 

Males 16-60: 30-400 ug/L

Female's: 16-60: 30-150

Both >60: 30-650 

The lower limit of 30 ug/L is in accordance with the updated NICE guidance and the upper limits are in accordance with guidance from the Association of Clinical Biochemists. ‘

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