The use is really small? Uh, no. In operating rooms the amount of ketamine they use is to _knock out_ the patient. Recreational uses are only interesting bec

The use is really small? Uh, no. In operating rooms the amount of ketamine they use is to _knock out_ the patient. Recreational uses are only interesting because they have less than a knockout dose. If you did twice the amount of a clinical knockout dose, you'd just be more knocked out, you wouldn't be tripping. Here's the recreational dosage numbers: https://www.erowid.org/chemicals/ketamine/ketamine_dose.shtml https://www.erowid.org/chemicals/ketamine/ketamine_dose.shtm... Upon some more research, it appears I'm wrong. K isn't being used to knock people out anymore. (idk, my mom is a retired physician and she talked about how heart surgeons used to knock people out with k.) On page six you can find battlefield doses http://www.health.mil/~/media/MHS/Report%20Files/201203.ashx http://www.health.mil/~/media/MHS/Report%20Files/201203.ashx After you convert erowid's mg/lb to mg/kg it's clear that they're just giving light doses. You can find some reference to high doses of ketamine in this review article: http://www.annals.in/article.asp?issn=0971-9784;year=2015;volume=18;issue=2;spage=202;epage=209;aulast=Mazzeffi http://www.annals.in/article.asp?issn=0971-9784;year=2015;vo... "Similarly, Marlow et al. found that in coronary artery bypass patients, ketamine (2 mg/kg) caused significant decreases in stroke volume when used as an induction agent." tl;dr it varies. Also repeated/daily usage of ketamine is definitely bad and will make you piss blood.