All of the Celebrate shakes I have had have went right through mixed with water or almond milk. Do you guys have any recommendations for another brand that might help with this. It is almost like I am lactose intolerant. I'm trying to find something for now and after surgery.

Unjury makes a really good protein powder. It's a little pricey but good. My only suggestion is not to stock up on any one product and/or flavor. Things may not taste as good for a while after surgery. I came to loathe some of the flavors I had. It passed in time, but for a week or two I had to choke them down.

You may want to add a fiber supplement to your drinks like Benefiber. That might help with the bathroom issues.