Strattera dosages | ADHD Information

I have just been diagnosed with ADD & my dr presribed 18mg of strattera.

When I shopped see where I should buy it , I was SHOCKED to find that a month's supply of 10mg, 18mg, and 25mg was more than a month's suppply of 40 or 60 mg - and almost 0 to boot!

Since this comes in capsule form, I not sure you can divide it.

I want to ask my dr to chg my rx to 40mg so it will last 2 months.

Any advise on whether this is a good idea or not?