Bizarre, sudden Whey intolerance?

[sting68]

I've taken Whey protein for a few years with no problems. I mix in a little soy protein with it as well.

However, the past few weeks I've been getting HUGE stomach aches after taking it... no diarrhea...

I have NO problem with milk or other dairy.

I did notice that the problem appeared after I had taken NSAIDs (Naproxen) for 1 month for a swollen knee because the NSAIDS kind of tore my stomach up... but I had problems eating anything after that... but I can now eat all foods fine without problem as the stomach has healed... except for the whey/soy protein drink! It puts me on the floor in pain.

Again, I know many people have a problems with whey due to dairy intolerance, but I'm fine with dairy!!!

Any ideas on what's up!?

Lance

[Sophos9]

Any change of manufacturer and are you able to access another whey protein nutrient source?

[CliffA74]

Did you try a new brand? Or does your old brand say, New and Improved?

If not, try a new brand.

Or maybe you're tummy is not 100% healed yet....