Reading around, it seems like if you keep it within recommended dosages and have no existing kidney problems, it’s all good. The main thing is to make sure whatever supplement you’re actually taking is reporting the amount of creatine correctly.
https://www.verywellhealth.com/creatine-long-term-use-safety-11867165
Supplements aren’t regulated well.








I’ve seen some stories where vampires suck blood through their teeth, back when I read more vampire fiction, but I don’t know how common those are. I think it seems a bit comedic, so it probably depended on how funny the story was supposed to be.