Comment by gavinray

It'll be significantly cheaper, and assuming you purchase the Ketamine from a reputable source/vendor and use a test kit on it, the risk is comparatively "minimal".

Not necessarily "condoning" the behavior, so much as sharing harm-minimization info here:

For safe/sterile injection, you need three things, all cheaply + easily available on the internet.

1) Bacteriostatic water - https://news.ycombinator.com/item?id=44535690