Interesting.
I don't do spiro or anything like that. I'm post-op, so its just me and Estradiol.
When I take it orally, I don't get the foam but I feel very dehydrated, like for the first two hours after taking it (and yes, its been a continual even 5yrs post op), but for the first two hours, I feel like something from within is sucking the water out of me & I'm useless until I drink a lot of fluid and wait for that initial time to pass. In any case, on oral E, everyday I drink:
-1 liter of non caffeinated, non sugared plain soda seltzer, then I fill that up twice with tap water which comes to a total of 2 liters plain water and 3 liters overall fluid.
When I use the vivelle dot patch, I get modest amounts of foam in my pee, but do not get the dehydration feeling and so I drink only 1 liter of fluid a day, alternating 1 liter of soda seltzer and then the next with 1 liter of tap water.
Anytime I use the vaginal estrace cream, the very next time I pee, there are a lot of bubbles in the pee (little pop bubbles but NOT foam) the very next time, but not after that - and thats regardless of what I drink.
Additionally, I've been known to drink a cup of decaf black tea and/or a sprite zero here and there, but I don't include these in my overall totals. I drink absolutely NO alchohol, NO caffeine and NO sugar.
I wish I could combine the less dehydratey feeling from the patch with the no foam of the oral. Sigh.
I guess some forms of estrogen help the kidneys, others hurt it & I think testosterone also accelerates kidney loss. So what is safest for the poor kidneys?