I would search google - "does tamoxifen increase testosterone in men" and then decide if need any "natural" "boosting". the sister serm clomiphene is used as an hrt option for men, but tamoxifen does well too - and has other benefit of blocking breast/nipple receptor against estrogen. so maybe also not need exemestane - we are trying to let body homeostasis itself - and since you not take any aromatising 4-andro (and just how much that raise anything not known - no study like with 1-Andro), but did take possible estrogen lowering dht "epi", how high can estrogen be to start? 2866 *may* have elevated it, but that is (i think) hit or miss and debated (i never took ai on 2866 only cut). me, i say just go 10/10/10/10 +(?) on tamox and check blood work. i assume no bloodwork done?