There are a few brands of peanut butter that have xylitol in them. These include Jif, P28, and Nuts 'N More. Xylitol is a sugar alcohol that is often used as a sweetener in sugar-free or low-sugar products. It has a similar sweetness to regular sugar, but with fewer calories. Peanut butter with xylitol may be advertised as being low carb or keto friendly.
Xylitol is safe for most people, but it can be poisonous to dogs and other animals. If you have pets, make sure to keep peanut butter with xylitol out of their reach.