1) Can’t find any data on this. 1970s experiments concluded pig-thyroid much worse than pure T4, but they were using very large doses of T4, and when they swapped some of it for T3, it might have over-ridden the conversion mechanism and produced hyper symptoms. Also I suspect that only a small number (ballpark 16% notice, 2% notice strongly) of people would be happier on T4/T3 mix. Also there’s too much T3 in pig-thyroid, it is thought. T3 monotherapy generally believed to be a disaster. And I would suspect that to be right if I didn’t have John Lowe’s posthumous word that it works well for some people including him.
2) I’d love to see that if you know where it might be found.
3) Christ alone knows. One of the original concerns with pig-thyroid was inconsistency. I think they do it better now. Synthetic T4 also has a slightly patchy consistency record, according to some sources.
1) Can’t find any data on this. 1970s experiments concluded pig-thyroid much worse than pure T4, but they were using very large doses of T4, and when they swapped some of it for T3, it might have over-ridden the conversion mechanism and produced hyper symptoms. Also I suspect that only a small number (ballpark 16% notice, 2% notice strongly) of people would be happier on T4/T3 mix. Also there’s too much T3 in pig-thyroid, it is thought. T3 monotherapy generally believed to be a disaster. And I would suspect that to be right if I didn’t have John Lowe’s posthumous word that it works well for some people including him.
2) I’d love to see that if you know where it might be found.
3) Christ alone knows. One of the original concerns with pig-thyroid was inconsistency. I think they do it better now. Synthetic T4 also has a slightly patchy consistency record, according to some sources.