Final answer:
The high from amphetamines can last several hours with effects such as an elevated mood and increased energy. Methamphetamine can have much longer-lasting effects, while MDMA's high typically does not last as long. All forms of amphetamines carry significant risks, including addiction and long-term brain damage.
Step-by-step explanation:
The high from amphetamines varies depending on the specific compound and the dosage. In general, effects can last several hours. Methamphetamine, a potent type of amphetamine, can cause effects that last much longer. Users may feel elevated mood, increased energy, and other psychological effects such as euphoria or, in extreme cases, psychosis. It's important to understand that recreational use of these substances carries significant risks including addiction and long-term brain damage. Prescribed amphetamines, like those used to treat ADHD, have therapeutic effects due to increases in neurotransmitter activity that help with impulse control.
Methamphetamine, which has a longer duration of action, can lead to a state of wakefulness that might allow users to engage in activities like sexual activity for extended periods. Furthermore, MDMA, often known as ecstasy or molly, has different effects and duration, typically providing a sense of increased energy and pleasure that is not typically as long-lasting as methamphetamine but still carries the risks of use. In the case of cocaine, which is also a stimulant influencing dopamine levels, the high lasts a much shorter amount of time, often less than an hour.