Syabu is not that dangerous laaaa despite all the negative media attention that it got. Alcohol is much much worst drug ever

Syabu effect won't make u hallucinate cos it is just a psycho stimulant,  not hallucinogen. When he hallucinatory like that, it is most likely due to the sleep deprivation when he's high, not due to the real effect of syabu

In low doses, methamphetamine can elevate mood, increase alertness, concentration and energy in fatigued individuals, reduce appetite, and promote weight loss. At higher doses, it can induce psychosis, breakdown of skeletal muscle, seizures and bleeding in the brain. Chronic high-dose use can precipitate unpredictable and rapid mood swings, stimulant psychosis (e.g., paranoia, hallucinations, delirium, and delusions) and violent behavior.