Is it common for adderall (dextroamphetamine and racemic amphetamine) to cause gallstones?

No evidence: I've never heard of evidence for this effect. If you don't need it, you should not use it and in any case - never abuse it! But you are not likely to develop gallstones. Talk with your provider about this concern and ask to be monitored if you are worried.

No: Not a usual side effect

Adderall (dextroamphetamine and racemic amphetamine) & Gallstone: Not a known adverse effect.