Milk allergy have
Powders that are 100 percent whey protein ISOLATE are lactose free. But you've have to mix them with something other than milk. The Syntrax Nectar line has things like coffee, tea, fuzzy navel, lemonade, and other fruit flavors that mix with water.
There are a couple of egg protein powders I used, but can't remember the names. There are a bunch of soy and other vegan powders, but I have no experience with them.
6'3" tall, male.
Highest weight was 475. RNY on 08/21/12. Current weight: 198.
M1 -24; M2 -21; M3 -19; M4 -21; M5 -13; M6 -21; M7 -10; M8 -16; M9 -10; M10 -8; M11 -6; M12 -5.
I also have a true milk allergy with anaphylaxis, most people assume that I am lactose intolerant. I have found that VEGAN protein powders are the best bet to be sure that there is no whey, casein, lactose ect. If you have a whole foods or a sprouts near you they usually sell some of the vegan powders in packets to figure out which one it is that you like.
Also there are a lot of collagen based protein powders that are GREAT and dairy free.
Good luck.