1 Pill a day to aid in prevention. 2 Pills a day for a canker or cold sore breakout. 
 
The Canker Spanker - Original
The name you've come to trust!
 
The Canker Spanker is a unique alternative to topical products for oral cankers and cold sores. The Canker Spanker reduces overall breakouts by 75% if taken daily and decreases healing time by 75% if taken anytime during a breakout.
 
Individual results vary.