Quote from: Transfused on February 21, 2018, 04:18:49 PM
Sublingual is 5 X stronger than oral.
Studies have shown levels to be up to 10 fold higher vs. oral.
QuoteThose put a lot less strain on the liver.
Estradiol taken orally has never, in studies, as far as I know, shown to cause adverse effects on the liver. The issue seems to be more whether it significantly affects coagulation and findings seem to suggest the effect is much less pronounced compared to other oral estrogens which aren't bio-identical. This is reassuring.

QuoteOn pills I experienced symptoms of anxiety. (...) I also had migraine on pills.
+ 1
Quote from: Dani on February 22, 2018, 06:51:40 AM
Low dose or high dose does not make that much difference.
To me, it did. I know for some other women, it also did. It depends.
QuoteThe single most important thing to watch is the blood levels.
Blood levels fluctuate, the numbers could be vastly different from one moment in time to another.
The right blood level for all transwomen, for optimal feminization is not known, according to a recent study. Individuals vary, respond differently to the same level due to genetics, their sensitivity and even their hormonal environment (progestogens/anti-androgens such as cyproterone acetate/medroxyprogesterone acetate downregulate estrogen receptors, first years of puberty, girls don't produce any progesterone and subsequently, only cyclically). Just think alcohol: do individuals all respond similarly to the same concentration of alcohol in the blood?
Blood levels don't necessarily reflect intracellular levels, as shown by several studies so could be misleading. Precursors such as estrone sulfate, dehydroepiandrosterone sulfate (DHEA-S) can convert to stronger forms of estrogens/androgens in cells so that levels of testosterone/estradiol may be identical in the blood but because of a difference in the levels of precursors or perhaps a different concentration of enzymes in cells, intracellular levels could be significantly different.
QuoteYou just need to have your blood levels in the normal female range to make things happen and keep your blood levels at that female range for several years.
The normal female range is wide, varies from one lab, one study (and one woman) to another and even overlaps men's. From as little as 20 (in men, 10-60 pg/ml) to up to 1,000 pg/ml during a menstrual cycle.
Ciswomen and transwomen differ in many respects:
- puberty levels of growth hormones are significantly higher
- in-utero exposure to different hormones which *may* affect sensitivity to hormones later on in life, as confirmed by some studies in rodents
- some transwomen take estradiol orally, SHBG is affected differently, estrone (and estrone sulfate) levels are significantly higher
- ciswomen may have higher/lower levels of hormone precursors such as estrone sulfate or dehydroepiandrosterone sulfate which can result in different concentrations intracellularly
- their levels fluctuate much more than ours
- progestogen/progesterone levels, as mentioned above
- transwomen were exposed to very high levels of testosterone for several years compared to none for ciswomen
Just my 2 cents.