it is desiccated pig thyroid and is mostly T3 with some T4. I took it for a couple of years after taking Levothyroxine for lots of years and not feeling my symptoms change. I switched to Armour because it was more “natural”. It works for some people but it didn’t help me much. It is mostly T3 so it knocked me off balance at times. I finally went and saw a new endocrinologist and we both decided a “controlled” prescription is what I needed due to my Hashimotos and lab work. My numbers were constantly bouncing from low to high or vice versa. I have always tried to do things more natural and take care of my body, but am learning for me I need to accept that something’s I need to do the medical way. This was a hard thing to do but I have already noticed a positive difference in taking Synthroid. I chose not to go back to levothyroxine because it never helped my symptoms and I read that some people found better results by taking the actual name brand so I’m hoping to be in that category as well. We will see in a couple of months when I get labs done again 😊. Like I said though, I can already feel a difference😊

an endocrinologist recommended it to me is all 🤷‍♀️ I’m still trying it out, so I guess we will see!