* It's a misspelling: You may be thinking of a similar product with a different name. Could you check your spelling?
* It's a regional or local product: It might be a brand or product specific to a certain location. If you can tell me where you encountered this term, I might be able to help.
* It's a made-up name: It could be a fictional product from a book, movie, or other work. Can you give me more context?
Please provide more details so I can help you figure out what "Meyers Bitter" refers to.