I have never taken it vaginally and am afraid to try due to ongoing VA/bladder issues. From what I have read, the blood levels obtained vaginally are higher than those when taken orally because you are bypassing the liver (which breaks it down much faster if you take it orally). During the breakdown of progesterone a metabolite is made which causes the sedative effect obtained more commonly during oral dosing. I currently use 50mg patch.
With 100 orally every night since last August, I feel relaxed most of the time, can sleep all night with no waking, it opposes some of the estrogen side effects and makes my urine somewhat concentrated. I do not seem to have withdrawal symptoms but it does seem to build up at the end of the month causing headaches and more VA symptoms, so I stop using it for 4 days at the end of the month which relieves symptoms. After starting back on it, I using get a nasty deep seated pimple somewhere on my face. Trace blood in urine which only shows up on tests. No withdrawal bleed. Itching all over (mild) when exposure to heat or anything that makes me sweat towards the end of the month before the 4 day break. Some carb cravings. Last 3 mo have not needed local estrogen.
With 200 orally every night, I have headaches all the time, dizziness, feel bloated and gain weight with carb cravings, breasts hurt, still no sleep problems, my bladder burns all the time and my vaginal/vulvar skin burns after urinating every time despite systemic AND local estrogen. My urine turns very dark and I have blood in my urine. I have terrific heartburn and feel out of sorts all the time. No withdrawal bleed. Bad acne on bum (mostly) and face. Terrible itching all over body anytime I get upset, get exposed to sun, sweat for any reason including exercise or take a hot shower. This doesn't go away until I flush with cold water or sit in front of a fan and cool down. Elevation of testosterone level which baffles my doctors as they don't know why, but my research has shown that it seems possible through the body's manufacture of steroids pathway.
I really wish they made it in a smaller dose than 100mg. I really think that is the answer for postmeno women using lower estrogen doses. I would like to take low dose estrogen without it, but doc won't let me. My doc says cycling can slightly increase endometrial cancer risk vs. continuous dose due to constant restimulation and sloughing and would prefer I don't do it at my age/post meno status. I don't know if that is correct as so many of you use it that way. But, who wants to be having periods in 70's/80s? I am not worried about breast cancer for some reason but just have never been concerned.
I might consider asking the doc about the low dose estrogen patch of 14 mg (menostar) used only for osteoporosis that doesn't require taking a progesterone derivative. Anyone tried it?? Of course I would still need local estrogen then probably. Maybe another option would be Osphena??? I don't have the hot flashes anymore and retired in December so don't have to have the estrogen for foggy brain at work anymore, thank goodness!