My pet hamster's past is filled with a wealth of experience in dealing with comparable doses of Adderall
(and other stimulants
). It would usually begin with a reasonable dose (20-40mg), followed by a series of re-doses over the next few hours. It was not uncommon for him to consume about 300-800mg in a period of 2-4 days. The first day was usually pretty cool. But after the first 12-24 hours the side effects
became more and more noticeable. It usually ended with a pretty substantial crash.
A 380mg binge in 2 days can cause some issues even with a high tolerance. To answer your question of whether or not this kind of dose is safe; I mainly want to point out the physical effects that Adderall has. The obvious ones are loss of appetite and insomnia. But I would pay serious attention to the the effects on the cardiovascular system. Heart rate and blood pressure can be affected.
Like you mentioned in your post, the "maximum safe dose" is going to vary greatly depending on the person. Try to get some sleep and some food. Try to pay attention and see if there is a noticeable change in heart rate. In the future, try to avoid taking big doses in a short period of time, especially if there is any history of cardiovascular issues. Take it easy. Good luck getting some sleep