The only difference between Zydone and Vicodin is the amount of acetaminophen contained in each product. They both contain hydrocodone and acetaminophen.
Vicodin 5mg hydrocodone + 500mg acetaminophen
Vicodin ES 7.5mg hydrocodone + 750mg acetaminophen
Vicodin HP 10mg hydrocodone + 660mg acetaminophen
Zydone 5mg hydrocodone + 400mg acetaminophen
Zydone 7.5mg hydrocodone + 400mg acetaminophen
Zydone 10mg hydrocodone + 400mg acetaminophen