It could, but probably will not affect your Life Insurance Rates. It depends on the dosage, and what the underlying condition is that it is being prescribed for.
As long as it is a low to moderate dose for something such as basic "attention deficit" it should not affect rates very much, if at all.
Adult Attention Deficit Hyperactivity Disorder (ADHD)and narcolepsy are both common health conditions for which people are treated with Adderall. Both of these conditions will most likely affect life insurance rates to some degree. With a history of control for over a year, compliance with treatment, and evidence of stability (such as the ability to hold down a job), the effects on premiums will be least.
As long as it is a low to moderate dose for something such as basic "attention deficit" it should not affect rates very much, if at all.