I have canker sores all over my mouth and i wanted to know if there is an over the counter mouthwash i could use because it's also on my tonsils.

Canker sores: I understand your distress. Canker sores are mouth ulcers which can happen due to Mouth injury/irritation, deficiency of iron, folic acid, and other B vitamins, food irritation or stress. Antibacterial mouthwash like Listerine mouth wash ay help. Please see Oral surgeon because Canker sores are all over your mouth and tonsils for Diagnosis and Treatment.