Advice on how much T3 to take and when - Thyroid UK

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Advice on how much T3 to take and when

KayPoole profile image
5 Replies

I used to take 2 grain of Nature Throid NDT at 6.30am, before they stopped making them. Therefore 76mcg T4 and 18 mcg T3.

I am currently on 150mg T4 precribed levo, which I take at 6.30am each day, but have recently sourced T3.

I also take Vitamin K2 at 9am

B12, Vitamin D3, Magnesium L-threonate and Iron at 12pm

Holy basil at 3pm.

Should I reduce my Levo to 75mcg and take 18mcg of T3. In line with how I dosed on NDT?

Also should I take T3 at the same time as T4?

Thanks in advance :-)

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KayPoole profile image
KayPoole
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Wired123 profile image
Wired123

I’m sure others better placed than me will come up with some answers.

In the meantime how will you so precisely determine you are taking 18mcg of T3 when tablets are available in 5mcg and 20mcg doses?

I find it hard enough to halve my 5mcg tablet into 2.5mcg each and they never properly halve.

KayPoole profile image
KayPoole in reply to Wired123

Good point.... I've just checked and the tablets are 25mcg so thats a very good question, I have a pill splitted so will attempt to quarter them 🤷‍♀️

SeasideSusie profile image
SeasideSusieRemembering

KayPoole

I also take Vitamin K2 at 9am

Is your K2 a tablet, capsule or oil based liquid drops. If a tablet or capsule are you taking it with some fat, Vit K is a fat soluble vitamin and needs fat to be absorbed.

B12, Vitamin D3, Magnesium L-threonate and Iron at 12pm

You need to take your iron 2 hours away from any other supplement (and medication) as it affects their absorption.

D3 - same as K2, needs fat to be absorbed.

Also should I take T3 at the same time as T4?

There's no problem with taking them at the same time. You might want to split your T3 into 2 or 3 doses, some people do, others take it all at once. I split mine into two, I take 12.5mcg early morning with my Levo and 6.25mcg at 5pm.

Should I reduce my Levo to 75mcg and take 18mcg of T3. In line with how I dosed on NDT?

You might find that you can't swap like that, but it's a good place to start, retest after 6-8 weeks and see what your levels are like and how you feel, then you might find you need to adjust something. Only change one thing at a time, never both Levo and T3 together or you wont know which you benefit from.

KayPoole profile image
KayPoole in reply to SeasideSusie

Thanks 😊

K2 is tablet and I take it with full fat yogurt. Vit D is olive oil capsule.

So willl change Iron to 11am and others to 1pm.

Wired123 mentioned peviously that you can only get tablets in 5/20 mcg form do you have different strengths to be able to dose 12.5 and 6.25 or do you split your tablets?

So should I continue with 150 levo and introduce maybe 12.5mcg of T3 and test after 6 weeks and adjust as needed maybe? Just worried that T4 might be too much once I start T3.

SeasideSusie profile image
SeasideSusieRemembering in reply to KayPoole

KayPoole

Wired123 mentioned peviously that you can only get tablets in 5/20 mcg form do you have different strengths to be able to dose 12.5 and 6.25 or do you split your tablets?

The 20mcg (and 5mcg) tablets will be on prescription.

I self source and mine are 25mcg so I take half a tablet in the morning and 1/4 of a tablet in the afternoon.

So should I continue with 150 levo and introduce maybe 12.5mcg of T3 and test after 6 weeks and adjust as needed maybe? Just worried that T4 might be too much once I start T3.

I mentioned above that what you suggested was a good starting point - 75mcg Levo plus 18mcg of Levo (but would be 18.75 if you have 25mcg tablets). If you were swapping straight from NDT to Levo plus T3 it would be easier, but as you've been on just 150mcg Levo it might be better to maybe drop the Levo to 125 for a week or two then add in 1/4 of a tablet of T3 (6.25mcg) for a couple of weeks then maybe add another 1/4 of a tablet and see how things are. It takes a lot of tweaking and you can't really rush it.

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