system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] What are the long term, tangible effects of drinking unicorn blood?
gpt
Weight loss and dental issues are the most apparent, along with a host of psychological problems. The withdrawal symptoms are pretty horrific; if you didn't kill a unicorn to obtain the blood in the first place, you'll be more than willing to once addicted. Once you've slayed a unicorn you'll also be cursed for life.

Unicorn Blood.

Not even once.