Originally Posted by
Machka
Ensure Plus is the stuff I generally use for long rides, and it runs about 350 calories per bottle. I notice that they have added milk to it now, so I'd have to try it to see if it was still OK - but it does say that it is suitable for lactose intolerance.
http://ensure.com/products/ensure-plus
+1 on Ensure *Plus*.
BTW If you have a "King Soopers" supermarket nearby, they sell generic forms of Ensure and Ensure Plus, called "Fortify" and "Fortify Plus". The price is ~60% of Ensure.