Acid reflux and canker sores samj89 has anyone ever heard of multiple throat canker sores being in any way related to acid reflux, etc? i have not been to the doctor yet, but i have symptoms of acid reflux and am battling multiple canker sores in my throat and on my tongue thanks for any help!!. Acid reflux canker sores. Canker sores and acid reflux foods that fight hearbturn (