I actually think canestan is an antifungal.
Talk to your doc about the green urine. All I can find online acts like it's not a big deal even if it is unusual, but I would certainly think it worth calling the doctor over.
I'm not sure I was given canesten. The applicator with the egg looking thing instead of internal cream. And I wasn't given a pill either. I was given three tube with three eggs that go up to clear the infection. And an antifungal cream as well
This is from the Mayo Clinic:
There are many case reports in which methylene blue turns urine green.
Other medications associated with green urine may contain phenol groups and include promethazine, thymol, cimetidine, and propofol. The mechanism of action appears to be caused by phenol's conjugation by the liver and subsequent excretion by the kidneys. The strength of the green seems to be dose related. Some nonphenol drugs noted to produce green urine are metoclopramide, amitriptyline, and indomethacin. In any event, the urinary findings of all of the above medications are benign effects.
Did you have amitriptyline for your infection?
I would call your doctor and ask them if you should be concerned, if you've been drinking plenty of water and your urine isn't almost clear than something could be up.