Being post op, there is only a need for a low dose of Estrogen to maintain blood levels at Female menopausal norms.
I have been taking Estradiol Valerate since I was post op (2000) which is in tablet form, but low dosage.
I struggled for months with patches but found I was allergic to the adhesive and could never keep the things on (I play a lot of sport).
Recently I have been looking at Estrogen slow release implants that a GG friend has (she had a ovarian cancer and had them removed), another possible route.
Rebecca