Answer:
You may eat food with or after drinking Immunocal, and it will still be effective.
The best thing to remember is that you only want to take in 20 grams of protein at a time. More than that, and your body may not absorb it all, and you don't want it to go to waste.
There are 10 grams of protein per pack, so if you are taking 2 packs a day, just wait at least a half hour after eating it before taking in more protein. Anything else is fine with it.
Also, do not put Immunocal in a regular blender, and do not mix with anything hot. You can learn more about Immunocal along with a mixing video here.
Immunocal is the most effective, safe, and natural way to raise and sustain your glutathione.
You can order Immunocal here.