Is 60 mg of Adderall (dextroamphetamine and racemic amphetamine) and 5 mg of Klonopin together dangerous in terms of CNS issues or a possible heart arrhythmia?

Not ideal. In general both adderall (dextroamphetamine and racemic amphetamine) 60mg and Klonopin 5mg as single doses are incredibly high doses and I would be concerned for their use in that way. I would be concerned for respiratory depression with Klonopin and would not recommend adderall (dextroamphetamine and racemic amphetamine) let alone at that one time dose amount if there is an existing arrhythmia. Understanding why both may be needed and at those doses is indicated. Concermed.