
Originally Posted by
Mallet
Coldstone I don't see any benefit in shutting down your own natural (free) thyroid hormone production to replace it wiuth the same amount already being produced, that would be like doing 50mgs/week of test if you get my picture? I actually preffer t4 instead for these purposes because the threshhold is higher with t4 than t3 when we are talking about our feedback mechanism, when we take t4 our body does the normal conversion to t3 and alls well, when we are taking t3 we are taking the "end" product and therfore we have a much faster feedback to hault endogeous production...keep in mind you need to ensure that your consuming enough of the right nutrients that are responsible for the conversion of t4 to t3, and there is no gaurantee that the rate of conversion will remain at approx 1/3, but we only need about 1/6 of the added t4 to convert to t3, so a rough dose of 60-75mcg/day of t4 should gaurantee you atleast 10-15 mcg of added t3. I personally run 50mcg/day of t3 when clean bulking, i don't mind shutting down production for a while because i know with proper pct's i will not get any rebound effects, plus my BBT is already in the optimal range to begin with so a low dose does me fine these days. So basically if your not aiming at shuting down production stay within the 12.5mcg rabge if your gonna shoot for 25mcg then you might as well go with 50mcg for the added benefit, or else you rreally just breaking even with 25mcg.