Ever since i started taking adderal (18 months) I have been getting canker sores in my mouth, on my tongue, inside cheeks, gums. They are brutally painful. But I also have no teeth except for 4 on the bottom and they are rotten I am in the process of having dentures made. Also, I am on numerous medications, one being a high does of lyrica- please let me know what is attributing to these cankers