Drop bags bar - your HELLFAN is probably "Halfan" (Halofantrine).
See
http://www.uct.ac.za/depts/mmi/jmoodie/p01part2.html for a good description of antimalarials (including Halfan) and other precautions.
"Few of us took anti-malarial drugs..." - VERY scary that supposedly smart guys are still playing Russian roulette like this.