Amy emailed in the following tip:
I recently found out that Similac offers a "Tummy Care Guarantee". If you need to switch formula types (within the Similac family) you can purchase the new formula, fill out the form on the website or on paper and they will refund the cost of your new formula up to $32 dollars!<
There is a limit of 2 rebates per address, but this could definitely help if you're struggling to find the right formula for your baby.
