I had to dig this out of one of my old posts. Might be of some use to you.
Personally, I tube them with electrolytes (the best commercial one available up here is called ReVibe), a scours bolus and give them a shot of Biomycin. Seems to work, although I usually have to redose with the electrolytes three times daily to keep them hydrated until they regain health, and also the boluses once daily until they quit the diareaha.
Here's an Old Time Scour Cure
1.5 Litres (just over a Quart) Warm Water
2 TBSP Brown Sugar
1 TBSP Salt
1 Raw Egg
1 TBSP Javex Bleach
Mix well and administer by tubing.
Here's how it apparently works:
The sugar, salt, water mixture is the equivalent of electrolytes (keeps the calf from dehydrating and provides energy).
The egg coats the stomach wall (and possibly provides some protein).
The bleach kills the scours bacteria.
Now I haven't tried it myself yet, as I haven't had a case of scours here this year, but it's early for our area so I'm sure that I'll be dealing with it in another week or two.
BUT from what I do understand, one fellow responded to the original posting of this "recipe" with pretty glowing reports.
Apparently, he had a 'down & outer' calf (prone, sunken eyes, etc) that he had used all the modern drugs and goodies on(and had gotten little to show for the money and time spent on them), and he came across the recipe and decided "what the heck"(figured the calf would be dead in the morning anyway), dosed the calf and to his delight the calf was up and sucking vigorously the next a.m.