What is the maximum dose of adderall (dextroamphetamine and racemic amphetamine) that can be prescribed?

Unclear: Fda guidelines for max doses are methylphenidate (50 mg a day) & amphetamine (30 mg a day), but some folk need and tolerate higher doses. Adult max doses are still being worked out, with some evidence that 100 to 110 mg a day of methylphenidate--70-80 mg of adderall--may be needed and tolerated at times. If dose needs keep rising, reconsider diagnosis or try another type of medication.

30 mg: In normal circumstances and for normal weight, 30 mg/day should be the max.