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Sydney high school students are selling a cheap and dangerous synthetic drug to classmates that mimics the effects of LSD and which has been blamed for the death of a year 12 student on the North Shore.
The hallucinogenic substance that Henry Kwan ingested hours before he jumped to his death at Killara on Wednesday night is widely available on the internet for as little as $1.50 per tab.
The synthetic substance, known as either 25B-NBOMe or 25I-NBOMe, first came to the attention of NSW