https://en.wikipedia.org/wiki/Enaree

So, I always wondered what I would do if the Apocalypse broke out and all estradiol medication was gone.

I thought that maybe drinking the urine of pregnant mares would do the trick, but you’d die of overhydration long before you could get proper levels. However, it turns out that, similar to the production of Premarin, you could use the urine to make estrogen cheese.

Unfortunately, I don’t really like cheese. So I’d be screwed either way