I have low thyroid levels t3, tw etc - i take naturhoid daily - usually i don t have symptoms but have been experiencing heart fluttering at rest, irritability, sore knuckles and anxiety - i take supplements to help and they usually work - lately ive had to take a chip of xanax - my sleep is good, my weight is good, no brain fog, no sluggishness - I also recently started to take metphormin for pre-diabetes -