How can adhd medication cause sudden death in a person who is healthy and without heart problems? i don't understand how this is possible.

CNS stimulant: This drug block the reuptake and increases the release of norepinephrine and Dopamine in extra neuronal space. As in any potent CNS stimulant, if abuse, the result can be catastrophic. Use it as directed by your physician. Now be careful when you combine ritalin, Adderall (dextroamphetamine and racemic amphetamine) and methylphenidate as i can see in your medication. It's dangerous.

Difficult to say...: There are many types of adhd medications that work in different ways. Generally any medication can potentially cause death in a seemingly healthy individual if misused, in other words, an overdose. People may have unknown allergies or underlying illnesses that are unknown, even if they appear healthy. Your health care provider may be able to answer this with more specific information.