When do I take my T3?: I've now been prescribed... - Thyroid UK

Thyroid UK

136,965 members160,561 posts

When do I take my T3?

Tweetypie28 profile image
13 Replies

I've now been prescribed 10mcg of T3 on top of 125 mcg of Levo. I take my Levo at night before I go to bed. My question is, can I now take my T3 at the same time as my T4 or should I separate them and take my T3 in the morning? x

Written by
Tweetypie28 profile image
Tweetypie28
To view profiles and participate in discussions please or .
Read more about...
13 Replies

I have also been prescribed 10mcgs T3 and was told by my Endo to take it in the morning 30 minutes or so before breakfast.I take my T4 Levo last thing at night before going to sleep.

Good luck ...hope all goes well and will be pleased to hear how you get on.

Tweetypie28 profile image
Tweetypie28 in reply to

Hi, thanks for this, I thunk I'll do the same. I'll start tomorrow! Have you started yours yet? How's it going if you are!

in reply to Tweetypie28

Yes....have been on it 9 days.....unfortunately it seems to be taking longer than I anticipated for me to feel good,but have been told here today that it may take three weeks so it's early days yet.I am only on 75mcgs Levo so it may be different for you as you are on a higher dose at 125 mcgs aren't you.I had a really busy week at the same time as starting on the T3 and had no time to relax,but all has quietened down now so shall hope to feel better......I need to be patient.I will keep in touch.X

shaws profile image
shawsAdministrator

You can take both together. It makes life easier.

Hennerton profile image
Hennerton

T3 is highest at night in a "normal" person, so I take mine at bedtime. Also helps me sleep well, although some people find the opposite.

Aurealis profile image
Aurealis

I didn't know that T3 is highest at night, I don't suppose you have a reference for this at all, or if anyone else does. In Paul Robinsons book there's a lovely description of the effect of the highest dose of T3 taken first thing in the morning, making the analogy of a wave washing over a sea wall.

in reply to Aurealis

Hi Aurealis, yes there is a paper which has been posted on here from time to time showing TSH, T4 and T3 levels in a 'normal' person throughout the day. If no one replies to you here perhaps you could post it as a new question or ask Rod - I know he knows about it. Maybe try looking back in my history of questions as I may have posted something about it, I'm not sure. Sorry I can't be more helpful right now. X

Aurealis profile image
Aurealis in reply to

Thank you diamond fire. I found TSH rhythm but couldn't find T3

deb25426 profile image
deb25426

I take mine together in the mornings! On same dose as you. I've had no probs taking them together! X

Eelaines profile image
Eelaines

Interesting. I'm starting on 20mcgs T3 next week and was wondering when to take it. I may take mine at night with my 75mcgs thyroxine. I guess it may be trial and error. Fingers crossed for everyone here, hope we all feel better! X

bossbird profile image
bossbird

I've been advised to take my meds staring first thing in the morning and not at night, i would take the t4 first thing then the t3 at lunch time

Tweetypie28 profile image
Tweetypie28

I took my first lot last night together with my usual dose of Levo. I must admit, I woke up a few times in the night. I was worried about adding the T3 so whether this made me wake up, who knows! I'll see how I get on over the next week x

Costindinu profile image
Costindinu

Since T3 has a half life of 4-6 hours, it will be “burned off “ until morning if you take it in the evening. You will want to get the energy from T3 in the morning if you don‘t work on a night shift. T4 has a half life of 6-10 days, so you can take it in the evening. I would put it under the tongue when going to bed. in this way you can take it even if you have eaten late in the evening (not recommended). If taken sublingually, it won‘t interfere with food or other medication which is swallowed.

You may also like...

When should I take T3?

150mcg levo before bed so it's not taken with any supplements or close to when I've eaten. I'm also...

When to take t3 and Levothyroxine?

quick question.... I've reduced my Levo from 175mg to 100mg, now I want to add t3 in but is it ok to

Having a blood test. When do I take my Levo?

I now take my Levo about 10 o'clock at night and my blood test is scheduled for 9.15 in the...

When do you take your second t3 dose?

makes sense. I am currently taking 50/75mcg levo and 15 t3 daily. I take the levo with 10 t3 around...

How Do I interpret test results when taking T3?

currently taking T3 (50mcg since 19 Sept '19) and I am feeling so much better now, since going off...