Why has my T3 dropped so much?: I posted the... - Thyroid UK

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Why has my T3 dropped so much?

Murphysmum profile image
6 Replies

I posted the other day but didn’t get many responses (thanks SlowDragon for yours 😊).

I’ll post the original below but suffice to say, nothing has changed, if anything I’m doing slightly less cardio stuff as the routine has changed with the kids going back to school but I did do two 5:2 fasting days last week. However, I’ve done this before with no issues but first time on T3 only. I feel like I’m battling a bit of a bug too, maybe a cold coming on, nothing major - would this account for such a change?

I’ve also been back on my preferred brand of T3 since Monday but still having periods of chest pain, anxiety and wakening feeling like I’ve stopped breathing.

I would welcome comments as to why img T3 has dropped so low - I haven’t changed anything except brand. My last few bloods have been around 6.5, 6.8, 6.4... so why the drop? Surely a different brand can’t be that far out?

Secondly my antibodies are higher than they have been for a long time. It’s been 18 months since I actually tested them but they were a bit lower then. Does an increase in antibodies correlate with feeling rubbish? I realise they are always high due to hashis but if they fluctuate do we feel it?

Thirdly I’m still feeling a bit rubbish. Sore head, slightly sore sinuses and behind one eye, though the blurred vision in that eye has gone. I’ve got a sore back too and just feel a bit bleugh though I’m still active enough. Maybe just a virus (scary to use that word now!)

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Murphysmum
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NWA6 profile image
NWA6

So the picture results are your current results? I know my T3 dropped about 20% recently, no apparent reason after being stable for a year and I added 5mcg and feel fine now. Should do a blood test soon but no rush.

I wonder if you’l have a virus?

Murphysmum profile image
Murphysmum in reply to NWA6

How strange! I feel like I’ve got something going on for sure, nothing major but a bit sore sinuses, sore back, just feeling a bit off. Feels like the day before you get a raging head cold but it hasn’t happened yet!

I’ve added in 5 but too early to feel any effects yet.

Did you have a change in brand? I had been on mercury pharma, got given morningside and now back on mercury so fingers crossed it’s maybe just that.

Struggling with the chest twinges and stuff tho - it’s been a while since those last happened!

NWA6 profile image
NWA6 in reply to Murphysmum

😞 sounds so strange! I’m not the best at giving input as I’ve only been on T3 for 16mths and have never experienced any side effects. I realise now with hindsight that I’d started going hypo about 3mths ago but it’s sooooo slow. I did a blood test and up T3 about 1mth ago and the tiredness was gone within about 3days. No change in brand, I’ve always been on Thybon.

Could it be Covid?

Murphysmum profile image
Murphysmum in reply to NWA6

No, it’s not COVID.

No cough, no fever and no taste/smell changes. Just feeling a bit off.

Hopefully if I take it easy for a couple of days and up my dose it’ll sort itself - just more curious now as to why it dropped in the first place! 🤷🏼‍♀️

SlowDragon profile image
SlowDragonAdministrator in reply to Murphysmum

Highly likely due to brand change

Murphysmum profile image
Murphysmum in reply to SlowDragon

Really? That much?

Holy moly. I’ve always just stuck to te dame brand because I think it’s best practice and in my early levo days I noticed a difference. Much as the gp waved away my protestations then, the pharmacist agreed with me, so I’ve always done that since.

Obvs once I found this forum my suspicions were confirmed but I’m still surprised by size of the drop.

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