I started using Cytomax Energy drink and haven't encountered the same problems that I did with Gatorade. I'm currently using the Fruit Punch flavor, isn't exactly yummy, but it isn't as sickenly sweet as some. Unfortunately, I think it's one of those things you have to play around with, which can be rather expensive I know. If you have friends who ride, maybe you can ask them for a sample of their particular brand.
I assume you're mixing your drink per the directions? The reason I ask is that some people think the stronger the better, but that can actually make the drink harder to digest.
I'm curious about the fact that it Accelerade didn't bother you until recently. I've gone through periods of time where my stomach just seems rather fussy. After a few rounds of it over the last several years, I realized that almost always coincided with taking antibiotics. While the drugs themselves didn't upset my stomach, they must have altered the contents of my stomach enough to make digesting certain things--sugar among them--harder. When I notice that now, I take some Acidophilus pills for a week or so, and my stomach usually goes back to normal. Just a thought.....
And I agree: Clif Blocks are a godsend.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher