How much Adderall (dextroamphetamine and racemic amphetamine) is safe to take?

Adderall (dextroamphetamine and racemic amphetamine) Usual maximum daily dose of Adderall (dextroamphetamine and racemic amphetamine) is 60 mgm, but some psychiatrists use doses as high as 100mgm to 200 mgm off label in some patients who have develope tolerance to the drug. Fda approved dose is 60 mgm max.