Blood test after changed Levo formula

[Adam1805]

Hi friends

My Levothyroxine company change the formula in this June ( eltroxin of Abbott)

before I start the new formula I do blood test that shows that my HT is stable (TSH1.77 FT4 12.8(range 7-16) FT3 6.4(range 3.5-7.1))

10 days after I start the new formula I start to feel bad .

Symptoms like tiredness, weakness and brain fog

I know I have to wait 6 weeks before I retest blood but I want to earlier the test because how I feel

If I retesting thyroid blood test after 3 weeks instead of 6 weeks I see the difference in blood test or that it’s too early?

[juliat]

My daughter can only take one brand of levo... they are not all the same.

[Adam1805 in reply to juliat]

I take the same brand but they change the formula

I hope that after 3 weeks I see difference in blood test

[helvella Administrator Thyroid UK]

Where are you?

People might get confused because the UK Eltroxin, from Advanz, has not changed formulation.

[Adam1805 in reply to helvella]

I from Israel

Our eltroxin is Abbott brand

[helvella Administrator Thyroid UK in reply to Adam1805]

Ah - thanks.

Is this different to the issue with Perrigo Eltroxin in 2017?

timesofisrael.com/drug-comp...

(Which was when GSK spun off Eltroxin to Aspen - not sure why Perrigo are the company identified!)

[Adam1805 in reply to helvella]

Yes it’s aspen brand

they change in Israel this June

I don’t want to wait 6 weeks because I feel bad

I hope that I see change in blood test after only 3 weeks