water kefir- candida

Hi
i've tried to drink kefir a couple of times and
every time i try water kefir or coconut water kefir i get a really nasty yeast infection
thats definately the cause because i feel great and when i try to drink that it causes candida

does any one know whats causing this
i dont think its the Sugar because Sugar doesnt directly do that
the kefir works like a clock
i think its some yeast strain in the drink thats causing sensitivity
also i dont get that from milk kefir but i cant drink dairy every day. doesnt seem to be too healthy
please help!