Hammer Perpetuem: Unflavored 16 Servings

I ride about 10,000 miles per year and use this on rides in excess of 2 hours. I generally don't eat before riding, even when riding 80+ miles so as to encourage fat metabolization. Most rides I average in the 20+ mph range, even up to 100 miles. At that effort level I need about 600 calories per hour ( I weigh about 160 pounds) but suspect that I can only metabolize fat at around 450 to 500 calories per hour, therefore I need some on bike nutrition to maintain my energy level. I find that mixing Perpetuem in my water bottles at the recommended dosage provides about 100 to 200 calories per hour. Using the product I feel that my energy levels are relatively stable and I recover well, During the summer I reduce the mixture to 1.5 scoops per bottle as I am drinking faster. Taste is ok.

Love this stuff. I do change up between the Caffe and the unflavored. I like the Caffe the best. The Strawberry/Vanilla taste like soap. #nasty. IMHO. To each his own, right? Most gels, powders and chews give me acid influx. I've never had that experience with this stuff.

I have used this product through several multiday races. My challenge is getting enough hydration and calories. This is a great way to get both. The unflavored is great because I can drink it without getting to sick of it. Other flavored options tend to get kind of frustrating to drink after five or six hours in the saddle.

Was a good replacement for the unflavored Hammer Sustained Energy.

Kept me fueled for 33 hrs....

Like most other reviews you'll read, this product works. Hands down.I've used Perpetuem for 2 years now over 4 major races (marathon, 70.3, 140.6, and 100 mile trail run) and every single race I felt the benefits of this product - BIG TIME. As others have explained, you'll need to consume water with every scheduled supplement sip (20 mins is perfect) and of course, listen to your body along the way.