Is this compatible with Dr browns plastic bottles?

Hi Carrie, thank you for your inquiry, You can use any bottles in this warmer that are up to 7.2cm in diameter, and are suitable to take up to 100 degrees. We hope this helps. if you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder. Here you can find contact details for your nearest Baby On The Move Store where one of our team experts will be happy to assist you in your product search and help answer any further questions you may have.