First of all, sorry to hear he is under the weather and hopefully he is on the up and up. You can get clear pedialyte...flavorless...I had given that to Dale before...and also added it to his water bowl...when he had bad diarrhea and vomiting. If he isn't in the mood for flavored drink, or doesn't like th taste of it...the clear stuff might be a good idea...it would be in the store near the baby formula and foods. Hope he is well soon!!

Robyn