T4

[mindgame1516]

My Dr prescribed me t4 a couple months ago I took it for a month and never went ringer a refill. Recently I've been feeling really tired a lethargic to the point where it's bothering me so I went back to the Dr and he said it could be theb thyroid and gave me another script. I forgot exactly what thyroid levels were burned said they were a little underactive, so he gave me25mcg a day this week. Two questions will t4 help burn fat. And will taking it lead me to having an even more under active thyroid

 

[MrZero]

t4 is known to speed up metabolism... So yes, it should help you to burn fat.

 

[Jeremiahflex]

My doctor put me on Levothyroxine and I was having sleeping problems but I did loose some fat. Im currently on 100 mcgs

 

[mindgame1516]

yea iw as reading about it last night appearently 25mcg is very low, so im not even expecting it to do anything,

 

[Jeremiahflex]

@mindgame1516 Yea I think low doses only work for people with true Hypothyroidism. I read most people for weight loss start at like 300mcg and also I've heard it can be suppressive of natty thyroid levels.

 

[TheQuest]

The body have to break down the t4 to make t3. If you use google can you see all the bad reviews on it. t3 over t4 any day !! t4 is a poor choise

 

[Dr JIM]

My doctor put me on Levothyroxine and I was having sleeping problems but I did loose some fat. Im currently on 100 mcgs

Your Doc prescribed Thyroxine at 100mcg/day?

 

[Dr JIM]

yea iw as reading about it last night appearently 25mcg is very low, so im not even expecting it to do anything,

Actually 25 mcg is the recommended daily replacement dose of Synthroid
AKA Levothyroxine or T-4.

Roughly 80% of T-4 is converted into T-3. The latter is believed primarily responsible for the effects of thyroid hormone.

The delayed peripheral conversion of T-4 into T-3 is important bc it diminishes many of the side effects noted when T-3 is ingested as the primary hormone.

Otherwise, with few exceptions, there is no difference bt the efficacy of T3 and T4 in clinical trials.

Finally although thyroxine exhibits both anabolic and lipolytic effects, at supraphysiologic dosages the anabolic benefit becomes CATABOLIC with respect to SKM!

 

[mindgame1516]

I was looking at thyroxine meds and saw it goes up to like 333mcg so I figured that It wouldent do muxh

 

[Dr JIM]

NOT, unless it's generic non-pharmaceutical junk, as that's more than TEN TIMES the therapeutic dosage!

 

[mindgame1516]

Levothyroxine Dosage Guide with Precautions - Drugs.com

Levothyroxone goes up all the way to 500mcg. I've heard more then a couple times that you need 100-159mcg to get the same effect of t3

 

[Dr JIM]

Yea, let me know how that works out,
bc such high dosages of T-4 are used almost exclusively for those with a metabolic defect involving the peripheral deiodination of T-4 into T-3

Much like AAS more is not always better especially in those with normal thyroid fct.

 

[Jeremiahflex]

Your Doc prescribed Thyroxine at 100mcg/day?

Yes, Generic Levothyroxine. Was on some trial synthroid but was switch to generic when it ran out

 

[Dr JIM]

As an initial dose that's on the high side but many younger folk need that amount, but side effects are more common as a result.

 

[weighted chinup]

Running high doses of thyroid hormone is stupid. A replacement dose in certain circumstances is fine but blasting this shit at high doses as a 'fat-burner' is pointless. At that point it doesn't matter how much gear you're running - it's still going to catabolize protein. Pointless.

 

[Dr JIM]

I know some BB will run T3/T4 as a PRE-COMPETITION cutting agent along with Beta agonists, with considerable improvements in LBM.

However these drugs, thyroxine in particular, can result in some reasonably serious CV adverse effects of used on a chronic basis.

To that end, what's the point for the non-competitive BB!

 

[Jeremiahflex]

@Dr JIM I never even heard of the stuff until my doc said my thyroid was shit and my test levels were low. If it's gonna eff up my gains not sure if I should come off it, I didn't think 100mcg was alot since some people with normal thyroid levels are running much higher

 

[Dr JIM]

If you're hypothyroid based on lab data, then of course thyroid REPLACEMENT is warranted.

This is entirely different than the use of thyroxine for its anabolic benefits, bc the latter is in many ways a doubled edged sword, as once again to much of a "good thing" can be BAD!

 

[mindgame1516]

Thanks for the input. So since your a Dr and know all this, would being on t4 for a couple months which they might go up sloe my thyroid down after I come off permanently. I now I've heard that's a myth but prof Fe 's I in a lot advice would be more benificial