Free T3

[Hippyhappy234]

I introduced t3 along with my ndt back in December. I was taking one capsule of thyrogold & 62.5mcg t3.

I had a blood test last week.

T4 10.2 (11.0-22.6)

Serum free triiodothyronine level 8.1 (3.5-6.5)

TSH <0.01 (0.2-4.0)

How much should I reduce t3 (thyrogold contains 12.5mcg t3)

I’m not taking any ndt at the moment due to very low iron & possible adrenal issues.

Thanks

[Clutter]

Hippyhappy234,

If you've stopped taking ThyroGold you don't need to reduce T3 dose too. 150mg TG also has 50mcg T4 in it so you won't have T4 converting to T3.

[Hippyhappy234 in reply to Clutter]

I think I have RT3 which is keeping me hypo. So I’ll stick to 62.5 mcg of t3. Do I’ll have you advice on how you think I should dose it. I’ve been doing 12.5mcg 4 x a day. Today I’ll increase back to 62.5mcg. Thanks Clutter.

[Kell-E in reply to Hippyhappy234]

Good plan☺

[Clutter in reply to Hippyhappy234]

Hippyhappy234,

We all have rT3. T4 converts to T3 and rT3. If you've not taken TG for over a week you won't be converting T4 to rT3.

It's hard to keep T3 away from food and drink if you're dosing x 4 daily. Three times daily is fine.

[Hippyhappy234 in reply to Clutter]

I thought t3 could be taken with food & drink ? Is it best to avoid & for how long ?

[shaws Administrator in reply to Hippyhappy234]

No thyroid hormones should be taken with food as it interferes with the uptake of the hormones.

[Clutter in reply to Hippyhappy234]

Hippyhappy234,

It should be taken an hour before or two hours after food and drink. Absorption will improve so you might want to reduce dose or you may become overmedicated.

[trelemorele in reply to Hippyhappy234]

Yes you are correct, you can take liothyronine with food

drugs.com/food-interactions...

[helvella Administrator Thyroid UK in reply to trelemorele]

Sorry, I do NOT trust that information.

For example, if you click on the tab for Professional information, it says:

liothyronine ↔ multivitamins with minerals

Moderate Drug Interaction

ADJUST DOSING INTERVAL: Concurrent administration of calcium-containing products may decrease the oral bioavailability of levothyroxine by one-third in some patients.

drugs.com/food-interactions...

Not even consistent with itself regarding the medicine being discussed.

I am not aware of any good studies which have researched the possible interactions of foods, drinks and supplements with liothyronine. Therefore I tend to consider the safest approach is to assume there is interaction and avoid taking liothyronine with anything else.