So if you are taking a three credit hour class (which is standard) then you would expect to spend about 6 to 9 hours per week studying for that class. Just to clarify, in this example studying includes homework, reading, projects, and everything else you have to do for a college class.
Similarities and Differences. Dextroamphetamine and amphetamine (brand name: Adderall) and dextroamphetamine (brand name: Dexedrine) are both central nervous system stimulants. Theyâre approved for the treatment of ADHD and also for narcolepsy (a neurological condition marked by severe daytime drowsiness).
Most people take 25 to 50 mg a day when taking Adderall. Doctors usually start adults on a low dose of Adderall and increase the dosage as necessary to achieve the desired results.  Answer:  If you mean the average starting dose of Adderall, then probably 5mg.  These are the other dosages available: 7.5mg, 10mg, 12.5mg, 15mg, 20mg, and 30mg.