Agree with Steve on this.  My son is only allergic to alpha-lactalbumin
(found in whey) and will not react to casein independently.  However, we
have found that casein is often whey contaminated and therefore not worth
the risk.

Gail

> Don, I'm sure, understands that casein allergies and whey allergies can be
> separate. It is possible to be allergic to just the casein or just the
whey.
> Perhaps Don is allergic only to whey.