In response to your Adderall tablets ... 

According to the Physicians' Desk Reference (PDR) it states that the Inactive Ingredients are: sucrose, lactose, corn starch, acacia and magnesium stearate. I hope this helps.

I have found a lot of meds I was taking includes lactose fillers. Especially prilosec (acid inhibitor), claritin tablets and there are other forms of the same medication that doesn't include lactose as a filler. Be sure to ask the pharmacist for the package insert they will usually give this to you. It will state on that if there is lactose within the ingredients.