Severe nosebleeds have been reported after snorting the powder . * It is usually sold on the internet as a legal high and described as a plant food or a research chemical not for human consumption . * It is illegal to sell , supply or advertise legal highs , but by adding the label " Not for human consumption " it is possible to get around the law . * It is available for as little as £ 5 a gram compared with about £ 35 a gram for the illegal drug MDMA , which has similar effects .