What happens to you physically when you take a lethal dose of Adderall?

The symptoms depend on the severity of the over dose. One symptom that will most likely be present even in low scale overdoses is Insomnia. This is usually coupled by Euphoria, talking very often/quite fast, An increase in body temperature, mild to excessive sweating, severe loss of appetite, Rapid heart beat, and an unusual change in behavior. These are some of the most common symptoms of a small to medium overdose which I would say would be 1 to 4 pills more then your prescribed dose. Usually the effects will gradually were off and you will be fine you should however consult a doctor if you are seriously worried or go to your local emergency room. With a larger overdose things get a lot more serious. The effects can include all of the afore mentioned symptoms and one or all of the following. Extreme rapid heartbeat and/or Arrhythmia leading to either cardiac arrest or in rare cases the heart literally rips a hole in itself, Either way you die. Amphetamine induced Psychosis/Paranoia including hallucinations and delusions with a loss of control of your actions. And finally massive Seizures resulting in death. You should definitely call 911 if you experience any of the major over dose symptoms or you will probably die. I'm not a doctor but this is usually the effects of an overdose. This should not be substituted for actual medical advise/attention. Amphetamines can be very dangerous and unpredictable at times. for more information on this and other drugs I suggest you visit the link below which contains a cornucopia of information regarding this and other substances.