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)
You also have the option of formatting your ebook in HTML 5 and CSS (but you will need some experience in using these). You can upload your Word file to Amazon and have it available as a Kindle ebook. You need to create a separate cover image (Minimum of 625 pixels at shortest side and 1000 pixels on longest side. Best quality is 2500 pixels on the longest side), and the format should be TIFF or JPEG.