I have used three different types of liquid t3 with zero results, including CEM(which i consider to be the most reputable available)s at 150mcg/day. If you read other forums many people say t3 does not hold up in liquid form. I am not a chemist, I don't remember the reasons but I would be happy to google it for you. All I know is I have seen zero results. I have no agenda other than giving someone unbiased feedback on my experience. You can search my posts to see that's all i ever try to do.