<s>[INST] Can the dietary supplement Lean EFX cause mouth sores? I have been taking it for ten days. It causes dry mouth so I am constantly drinking water. About three or four days ago I got a sore on my gums and swollen taste buds on the tip and side of my tongue. Today the entire tip of my tongue began to hurt and have a numb feeling. Very painful and hard to eat anything. I expect this will all go away in a couple days but I am wondering if it is from the Lean EFX. Any ideas??? [/INST] Hi Dear, Welcome to Chat Doctor. Understanding your concern. As per your query you have Chat Doctor.  Although this supplement not known cause such problem but in some people it is known to cause problem.  Ingredients like diuretics and stimulants are known to cause side effects in some people, usually those who are suffering from some other medical condition or taking other medication.  I would suggest stopping taking this supplement and consult dietitian and discuss the whole scenario. For now  </s>