GU Energy Roctane Ultra Endurance Energy Drink Mix, Vegan, Gluten-Free, Kosher, 35mg of Caffeine, and Dairy-Free n-the-Go Energy for Any Workout, 3.44-Pound Jar, Tropical Fruit

This is great for those very long runs. The flavor is very good and it provides this needed calories without having to constantly eat. Easy to mix and dissolves well. It has the consistency of water and no grainy texture.

I've been getting back into long distance cycling and wanted to fine tune my salt and calorie intake on long rides. I'm in SoCal so during the summer it's usually 90+ degrees. I usually use Nuun for added sodium and will always drink 22oz of water per hour but I have trouble keeping up with my calories. Regular foods are often hard to handle, carry and digest. This year I wanted to try something different, so I gave GU Energy Roctane Ultra Endurance Energy Drink Mix a try. I just did 60 mile ride with this and it went pretty well. I had a caffeinated flavor and it was a good amount, but maybe I shouldn't have started with a large cup of coffee before the ride. I'm a little sensitive to caffeine now that I've stopped drinking large energy drinks. The taste was fine. I don't know why people complain of the taste, it's on par with the other supplements. It wasn't too sweet either. The calories went down fine and I had no gas or stomach issues. This was a big plus since I'm able to ingest more calories on long rides. Sometimes I don't feel like eating, but drinking this stuff is easy enough. I felt great on the ride and the caffeine was felt for sure. It would have been perfect if not for the cup of coffee I started out with. I never felt weird, I just felt really alert and was not able to take a nap after my ride. Next time I'll skip the fourth drink on the ride. So yeah it's pricey but for long rides it works great.

Since cytomax was sold to gatoraid and they’re not doing anything with it (thanks Gatorade), I’ve been looking for a suitable replacement. I saw Rocktane and decided to try it. Taste Tastes great. Not that sweet. I like sweet in moderation. I typically scrape off buttercream icing off of cakes as it’s too sweet for me. But I’ll eat cream cheese icing with not problem. Grape has a nice subtle taste with just the right amount of flavoring to make it taste light and even refreshing. I cannot stand most energy drinks because they use fake sweeteners or use an ungodly amount of sugar. This has a much lighter taste than cyctomax which I considered very sweet. This seems to have the perfect taste balance for intense or long rides Stomach My stomach isn’t sensitive. My stomach didn’t feel weird after using this. No gas, no noises… Caffeine Why are companies adding caffeine? If you’re using this stuff your heart rate is already elevated from your workout. It’s not like you’re going to fall asleep during your workout. Adding caffeine just elevates your heart rate even more. I’m pretty sure I’m alert when I’m working out. This seems to be a bad trend. I’m glad grape has no caffeine. Mix This stuff mixes completely. I use regular tap water, with two scoops in a large cycling water bottle. Shaken, not stirred. Nothing ever settles to the bottom. It remains that way even after 24 hours (left a bottle out). Nice! Performance Rocktane works although not as great as cytomax. Cytomax had something that made it feel like you were exerting less energy and everything was easier. My legs also burned less during high exertion. Rocktane is much more subtle. It doesn’t feel like I’m breathing easier and while it will never be cytomax, it’s better than hammer (tastes horrible-took one sip and dumped it). It’s also better than c4. C4 endurance seems to pump up your legs more, like you’re weight lifting, so it wasn’t for me. Rocktane does control next day soreness (after a hard workout) but doesn’t eliminate it entirely. All in all, I’m glad I tried this. Ill keep using this until I find something better.

As someone who pushes through long runs and intense training, the GU Energy Roctane Ultra Endurance drink mix has become a staple. Each Summit Tea packet delivers a solid 250 calories of quickly absorbable carbs, a hefty 320 mg of sodium to keep hydration in check, and a powerful blend of amino acids (BCAAs plus beta-alanine) to help fend off muscle fatigue and damage. The light, refreshing taste mixes cleanly in 21 oz of water — no chalky or sugary aftertaste. It keeps me focused and energized, mile after mile. Whether you're racing or grinding through training, this is a rugged and practical go‑to energy boost that keeps you rolling strong.

I have been training for a 1/2 marathon and consuming 1 of these at 45 minute intervals boosts my energy levels. Easy to transport, tasty on the tounge

I had used Cytomax for 25 years, but they seem to have disappeared so I switched to this and have been very happy.

Very much enjoy the taste, my husband says it gives off kids cold medicine vibes, but I think the grape is more like Gatorade. In terms of performance, think the product works great for efforts over 1 hour, I supplement with other products to get to 100g of carbs/hour but this hasn't give me gut issues!

Provides good energy, and it's a good safeguard for bonking. I've used it for years now!