Hi Postmeno3, I haven't used Intrarosa myself but looked into it in the past in connection with the increase in pre-existing systemic dryness I experienced with the loss of ovaries via BSO carried out a few years postmenopause. Research shows a link between androgen deficiency & systemic dryness so this may be one of the reasons DHEA may improve symptoms of GSM & sexual function. You may be interested in the following links & extracts:-
https://www.ccjm.org/content/88/1/35"Androgen and estrogen receptors are present in the vaginal mucosa, submucosa, stroma, smooth muscle (vaginal, urethral, and bladder), and vascular endothelium. In the vagina, androgens regulate vaginal mucin production in epithelial cells, improve blood flow by increasing nitric oxide, and influence neurotransmitter content and nerve density."
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DHEA therapy for GSMThe only FDA-approved vaginal androgen for GSM is intravaginal DHEA 6.5 mg (prasterone), which improves cell maturation, pH, and dyspareunia compared with placebo,42 leads to improvements in all domains of sexual function,43 and has neutral effects on the endometrium after 12 months of therapy.44 Most studies suggest no significant increase in serum levels of sex steroids with the use of vaginal DHEA"
"In a 12-week 3-armed randomized controlled trial,46 postmenopausal women with a history of breast or gynecologic cancer, received compounded vaginal DHEA 3.25 mg/day, DHEA 6.5 mg/day, or a nonhormonal moisturizer. Dyspareunia and dryness improved in all groups, with no significant differences between either dose of vaginal DHEA and plain moisturizer (P < .005). However, women in the DHEA 6.5-mg/day group reported a significant improvement in sexual health compared with the other groups (P < .0001)"
https://www.frontiersin.org/articles/10.3389/fendo.2019.00561/full"
Physio-Pathological Aspects of VVA/GSMthese data are in line with the evidence that both circulating estradiol and its androgen precursors (dehydroepiandrosterone/dehydroepiandrosteronesulphate [DHEA/DHEAS], androstenedione, testosterone), as well as their local metabolites, are vital to maintain normal structure and function of the vagina and surrounding uro-genital tissues (49). Indeed, the science of intracrinology supports the idea that the age-related decline of circulating DHEA translates into a local intracellular deficiency of both estrogens and androgens, significantly contributing to poor vaginal health"
Wx