Hey! I don't know if you've had an oxalate heavy diet in the past but oxalate dumping can occur to those who suddenly adopt a low carb or carnivore diet. The thing is, it can appear relatively soon after starting this diet or many months after, it's still not known why. Peanut butter is an oxalate bomb, so you never know if you can develop oxalate problems later on if you start eating it regularly, but the poison is in the dose. Anyways, I'd just be aware of any symptoms developing over time and if they appear, it would probably be the peanut butter. Cheers.