=====================================
Interesting factoid (basically women only, not sure if apply to men)
Progesterone
oral --> half life 6-8 hrs
transdermal cream --> 6-8 weeks for serum to equilibrate, even with symptomatic improvement (do urine testing when on creme)
transdermal gels ---> 3-4 hrs (gels are neat)
------
same with testosterone, gells are preferable, act faster, creams stabilize in 6-8 week, hard to figure dosing.
===========================