When I was recovering I got those packets of EmergenC powder, instead of mixing it with water- which waters it down too much for me- I poured a tiny bit right in my mouth and sipped it down with water, after 2-3 packets I was ok- keeping in mind the body cant store Vit C, so when the body reaches near tolerance, it will tell you by being gassy- which precedes diarrhea- which is the bodies flush mechanism (through the intestines)- so just be mindful of that fact , it definitely helped my recovery, I was so weak I could barely hold my head up, EmergenC Packets at noon, feeling better an hour later