I've been vaguely aware that this is a problem, but this article really brought home just how much of a threat the spiking of drinks really is.
Pretoria's nightlife has taken a sinister turn with an "explosion" in the spiking of drinks - and the situation is getting worse.

Of gravest concern to city authorities is the type of drugs used to lace drinks.

The concern follows the drugging of University of Pretoria student Tristan Arnold, 20, and the death a few weeks ago of Johannesburg teenager Lezaan Kriel, a Grade 11 Florida High School pupil.

Tshwane Metro Police narcotics unit commander Superintendent Mark Newham said the drugs used could have fatal consequences.

"The problem is that people who do this act on rumours of what and how much they should use which is what leads to poisoning and in some cases death.

"We have been finding people using drugs such as Ketamine, which is a veterinary sedative," he said.

"It is happening everywhere and this problem is only going to get worse as people experiment with different types of drugs to see what works and what does not," he said.
full story from IOL here
What makes it particularly dangerous is the "experimental" nature of this attack. Bad enough a carefully calculated drugging. But the thought of a process of trial and error going on sends shivers down my spine.

These people are playing with their victims' lives.