It depends on the brand and product type. You can indeed find some gluten-free caramel based nibbles like Cadbury caramel nibbles. They are entirely gluten-free, and the details are also mentioned in the product description of the list of ingredients. For other products, you should check the list of ingredients and product details to find if they are gluten-free or not. Make sure you are picking up the right product if you’re allergic to any ingredient like gluten. If otherwise,  you can end up with serious health issues.