I gained weight on t3, why?: I thought about it... - Thyroid UK

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I gained weight on t3, why?

adin profile image
adin
17 Replies

I thought about it many times, why many people complain that if they add t3 to t4 (levo) they get fat. The more t3 they add, the more they get fat and i don't understand why. May depend on the manufacturer, may metabolism, I do not know.

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adin
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17 Replies
Aurealis profile image
Aurealis

It stimulates our appetites so we eat more!

adin profile image
adin in reply to Aurealis

Yes, I noticed that...

Aurealis profile image
Aurealis

Also T3 has a short half life, so until we find a balance may be hypo for some of the day...

fortunata profile image
fortunata in reply to Aurealis

The half life of T3 is one day. I take it three times a day, feel fantastically well on it and am definitely not fat. It hasn’t increased my appetite either. Maybe I’m one of the lucky ones. ☺️

adin profile image
adin in reply to fortunata

In my opinion, the half life is just 4,6 hours, that's what I noticed. I take 3 times a day 6,.. mcg each. May I ask you what kind of t3 you use?

fortunata profile image
fortunata in reply to adin

Just going on what my endocrinologist told me. I take Mercury Pharma. 20mcgs three times a day.

adin profile image
adin in reply to fortunata

Aha, I uderstand, you take only T3, no levo.

fortunata profile image
fortunata in reply to adin

Levo made me very ill.

adin profile image
adin in reply to fortunata

Me too, but I was on Euthyrox(junk), now on Tirosin far better...and the best T3 ever tried was Thylexan by Adinovoc.

Aurealis profile image
Aurealis

I understand that the half life of T3 is 3 to 4 hours, that’s why it’s often taken in split doses, not just once per day.

fortunata profile image
fortunata in reply to Aurealis

I take mine three times a day and my endocrinologist told me the half life of T3 is one day, which is considerably longer than three to four hours. We all respond differently. Maybe someone who feels hypo after 4-6 hours needs a very slight dose increase. I certainly don’t feel a dip in levels after 4-6 hours.

jgelliss profile image
jgelliss

A higher T3 can cause us to have insolence resistance .

fortunata profile image
fortunata in reply to jgelliss

😂

AnnaSo profile image
AnnaSo in reply to jgelliss

I have insolence resistance without high T3 😉

fortunata profile image
fortunata in reply to AnnaSo

💖

adin profile image
adin

I found an interesting article about T4/T3 ratio (pharmaceutical-journal .com) ; When combination treatment is considered appropriate, the ETA suggests that treatment should be started in a L-T4/L-T3 dose ratio between 13:1 and 20:1 by weight, and that L-T3 should be divided in two doses (one before breakfast and the largest one at bedtime).

I don't understand the calculation, why two ratio by weight? (after and before I gaining weight ? :))) )

MissFG profile image
MissFG

Dies anyone taking T3 later on in the day sleep ok? I take 32.5mcg first thing but wondering if I should take some mid afternoon just hard juggling in between food and supplements

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