I have been taking Oxypowder for almost three years. I am not aware of any specfic recommndations that you cannot take Whey Powder with Oxypowder . However, the company that makes the Oxypowder does recommend that you do not consume dairy products,carbonated beverages, and alcohol just to name a few. However, if you are using the whey powder in moderation, I do not see that this being a problem. The reason they recommned not to consume dairy products is that they contain Sugar which if you are combating candida. You need to eliminate all refined sugars if this is possible. If this is not possible then consume in moderation. The only other recommnedation is to make sure that you don't take whey protein to close to your Oxy-Powder. If you have questions about taking Oxy-Powder with other supplements, you should contac the company that makes the Oxy-Powder as they will help to answer any quetions that you might have.