Just like adrenaline in our body amphetamines stimulate and stir the body.

Due to deficiency of rest and more stress, the body’s energy supplies are exhausted. When a conflict is raged between the arousing effect of the drug and the body trying to relax comes out in the form of nervousness, bad temper and agitation. The appetite falls, eyeballs dilate and heartbeat along with breathing becomes fast.

Although at first the sexual desires are greater than before and it becomes crucial to have safe sex at this time, but this drive can be diminished with continuous use of this drug.  The danger of injuring blood vessels or heart failure is much more for users who follows laborious work out routine, has high BP and also high palpitation. For female users irregular period or complete stoppage occurs commonly. This is connected either with the loss of weight related with the use or due to the drug itself.

Repetitive & frequent use of high dose amphetamine over a longer period of time can bring forth hallucination, panic, illusions, and sense of harassment.