Thanks for bringing this to our attention, Lainie! There is no caffeine in our Tylenol Arthritis Pain Caplets so your experience is very unusual. So we can learn more about what happened and gather some details about this product, please give us a call at 1-877-895-3665. We're here to assist you Monday-Friday 9AM-7PM ET.
The EPUB files format is accepted by Kindle. However, to ensure proper conversion, it is recommended that you check the conversion with the ePubCheck Tool before uploading the file. Kindle uses the unzipped version of the ePub files and converts them for publishing. Plain Text (.txt)
This post will help if you are preparing your manuscript using Microsoft Word or similar software, prior to conversion to standard eBook file formats, mobi for Amazon Kindle devices and Apps, and ePub which is the required file format for all other retailers.