NP is comparable to Armour. It's a naturally derived desiccated thyroid extract (DTE). (porcine-derived aka pig thyroid) Difference being that it is non-synthetic and contains both T4 & T3. Some people report "feeling better" on one vs the other. Good luck getting it dialed in. Your inquiry reminded me that I need to get mine dialed in too. -Gott mit uns!
