Sorry, I don't know of anyhting other than peroxide.
I had to do this when my girls got into a pack of Trident I had in my purse.
(I want to add that I had never done this and chose to call my ER vet and have someone there tell me step by step what to do.

)
It was a violent thing me to see Maddie go through. Cooper, who had ate
all the gum, seemed to enjoy the pomegranate taste of her vomit

Maddie came and sat between my legs in the floor and looked at me with horrified eyes between each heave.