Update: This is day #5 back on topical progesterone 1-2mg topically. I notice the benefit after about 2-3 days of starting Progesterone. I plan to use for 7-10 days, haven't decided for sure with stop date. I continue to believe this is a very beneficial protocol. I've been thinking about this weird illness we all have. Some physiologic change occurs when stopping Propecia/avodart that's detrimental and you get stuck there. Something happens that messes up the natural feedback loop that would normalize the levels. There are many theories but IMO no one knows with certainty. So my current thoughts are these: Propecia acts like progesterone (progestin or whatever) and when you stop this for some reason the progesterone level in the CSF drops. The downstream products from progesterone are decreased. Maybe there is a positive and negative feed back loop that is interrupted and the problem is that this abnormal physiology for some reason is stuck in some sort of negative feed back preventing the system from normalizing. Low CSF progesterone levels have been documented in several reseach articles. Maybe boosting progesterone just a little is the key. Too much progesterone and you are inhibiting the normal balance. Doing nothing, and your progesterone level stays low. ( BTW measuring peripheral blood for progesterone will not accurately measure CSF levels and we all know the problem is in our brain. ) May be the bounce back benefit is actually the hormone transiently going threw the normal physiologic range/level and that helps but then it continues to drop and your benefit fads, to some extent. Maybe repeating this regularly, eventually this hypothetical normal level can stick and the neurohormonal levels get balanced, and you are normal again. I feel better using low dose progesterone than the higher dose, so I'd say higher dose progesterone is a mistake. I'm not sure about how the RU helps, but it does. I used est 10mg one day before starting Progesterone and I can appreciate the benefit so low doses of that may also be preferred. Maybe it's the re sensitizing of the receptor so the normal effects of progesterone are preserved. This is just a theory and I could be way off base. The point is with this current protocol I feel almost normal and it's a huge improvement compared to the past year and half. BTW, I'm not sure why more guys are not trying this. Possible stumbling blocks to this protocol are using too high of a dose of progesterone and not controlling prolactin.