The full name for this drug is amphetamine sulphate. It is a synthetic drug, which means it is made from chemicals and not produced naturally. This is a class A drug if prepared for injection. Class B drug otherwise.. Known As: Speed, Billy, Whiz, Amph, Uppers, Sulphate. Looks Like: It comes in a range of coloured powders or in tablet form. The powder is sold in envelopes of folded paper, known as ´wraps´. IT IS THE MOST IMPURE ILLEGAL DRUG IN THE UK. This makes it very dangerous. Apparent Positive Effects: Produces a burst of energy. You need less sleep. You don´t feel hungry. You feel alert, your concentration seems to improve and you feel full of confidence. The Downside: When the above effects wear off its payback time. You feel lethargic and extremely tired. Your body reclaims the extra energy you have used. You may feel extremely depressed. These feelings can last a couple of days, maybe longer. Your quality of life is affected for a long time. It can also make you irritable and aggressive. It can increase your worries and make you paranoid. In the short-term sleep, memory and concentration are all affected. High doses repeated often may cause panic and hallucinations. Long term use can cause a mental condition known as psychosis which is similar to schizophrenia. It also puts a strain on the heart, and overdose can be fatal. Overdosing is a real possibility as tolerance to the drug builds up with use. Regular users have to use more and more to get the same ´buzz´.