Hello. My sister in law went through this problem for almost a year with her Great Dane. Needless to say, she was at witts end as it was quite the big leak coming from a Great Dane. She finally mentioned it to her vet who prescribed a low dose of medication to try her on. The vet says the older girls who are spayed can br prone to it. She was on the lowest dose of meds for 2 days and no more leaking. I think she said it costs her about $19 every 6 weeks or so. But not a drop since and it has been months.
Perhaps you can mention it to your vet and see what options are available.
Best of Luck.
