Ok, so I admit to being completely confused here.
Some say Armour does not work the way it used too prior to reformulation (early 2009?), and that they need Erfa or Nature-Throid to feel the same...however, Nature-Throid, too, was supposedly reformulated...and many seem unhappy with Erfa nowadays. The company says the production facility changed (from Belgium to Spain???), but that the formula itself did not change...however, many patients do not seem to agree with this statement?!?!
Some say all NDT drugs need to be chewed in order to release the hormones from the coating, others say that NDT drugs not containing cellulose (such as Erfa or the Thai brands) can be taken sublingually.
Some continue to do well on reformulated brands such as Armour and Nature-Throid/Westhroid, others seem to do better on brands not containing cellulose...
Some say Armour/NT/WT were reformulated because the FDA required it; however, NP Thyroid is also a US brand, it is still being manufactured, and it does not contain cellulose...?!
I'd really like to know what works for you, especially if you have tried more than one brand of NDT before settling on one that actually works?!