[rea]

I have had the opposite experience, going from Canada to the US, and then returning.

no problems. Just keep a doctors note stating your prescriptions, taht you must keep your supplies near you, and a business card from your pharmacy with you. Its also good incase you have an emergency and need to get more supplies.

If you have a medi bracelet, wear it.

only when entering the states did I have any problems, and had to de-assemble my insulin pen to show the inside of it. that was it.