Not a correct statement, there are more reasons some individuals need to take more than 50 mcgs per day at different points in their cyle/diet/contest prep ect. I was involved in performing multiple studies during my Sports Medicine and Exercise Physiology undergrad labs with various hormones and their effect that support this.There are too many variables to even start to list, but I will list a basic explanation to support the statement.... otherwise I'm just a guy who makes an unsupported statement in 1 or 2 sentences and we see that way too much on the boards. I am not picking on you Cactus, just want the facts out there as many people use these threads to make decisions on drug and supp use.
The only way you could come close to comparing a tablet dose to what the body produces would be if you eliminate all variable involved.... way too many to list, but here are a few: How much of the drug each person breaks down during each othe the 2 passes through the liver before reaching the blood stream, Peristalsis speed and intensity, stomach ph and acidity levels, varied person to person gastrointestinal pathophysiology, ect, ect.
Maybe if every person was the same....... same weight, health history, stats, receptor sensitivity, metabolsims, hormone panel, and on and on.....
and was administered the T3 via IV........could you even begin to correctly make these comparisons.
Anyway, there is plenty of information out there on common doses and how to cycle up and down safely that involve going above 50 mcgs as well as some good answers in this thread. Take the basics then just experiment with the dose ramping up as others have explained from a low starting dose
good luck
Yours in Health,
Scott