Protein Drink Help

Vick_MN

Hello All-
I'm just looking for a little advice. My 15 yr old son has been down and out with the flu since Sunday. Saturday is the last day that I was able to get him to eat anything. He is drinking water and ginger ale so he is staying hydrated. I'm just concerned about him not getting any nutrients for this long and he is already so skinny that he can't keep his pants up. Do you think that maybe a protein drink would help him? If so, any advice on one that tastes good that I could get him to drink? I've tried Gatoraid, Poweraid, Popsicles and he really doesn't want any of them.

thanks for your ideas