Are your products okay to take if its past the expiration date? I have a bottle of Creatine XXL, it's about a year old. Can I still use it?

The CreatineXXL tablets will be fine to use.
FYI: the definition for an expiration date is that the product must be within 10% of label claim of each ingredient on the last day, meaning it’s still at declared potency. That said, our pills and powders have a 2yr expiration and fine to use after the date because the only issue might be that they are a little less potent, something that would only happen well after the date.