Rated 4.4 out of 5 by 20
Rated 2 out of 5 Not needed by healthy people
No apparent improvement in aerobic or weightlifting exercise. My energy and activity levels were already high, so there was no "weak link" to fix.
August 2, 2015
Rated 5 out of 5 I depend on it. Lee
I use it as support for my heart.
April 26, 2015
Rated 5 out of 5 by Denbob Energy and Stamina Booster
Boosts my energy and stamina and seems to reduce perceived exertion when taken before high effort training or race events. Like acetyl-l-carnitine, this product keeps me awake. I take it in the morning.
March 22, 2015
Rated 1 out of 5 by ger no change iin my endothelial function
March 2, 2015
Rated 5 out of 5 by Claudia I would buy this product again and again
Use this product daily as part of my supplement regimen. Am 64 years old, with a very healthy weight & BMI, exercise moderately daily to stay healthy; including climbing my staircase (16 steps) 21 times, daily, before breakfast. Certainly believe the Optimized Carnitine helps my body to do this on a daily basis.
February 2, 2015
Rated 5 out of 5 by Dina from SA Excellent Product
This is a great ATP product!
December 31, 2013
Rated 5 out of 5 by brick great product for every day use
great product for low energy,fat burning and for general wellbeing
March 2, 2013
Rated 5 out of 5 Effective
December 18, 2012
Rated 5 out of 5 by asims Very good product!
This is a good product
June 22, 2012
Rated 5 out of 5 by Reformed Optimized Living
This is one of my favorite products from Life Extensions! I like taking it with L Tyrosine or just w/ B100 and 1000 mg Vitammin C. Clears out any fogginess and helps me concentrate on everyday tasks. Although I feel alert, I get no side effects like shaky hands, nor do I have trouble sleeping. I live 64 miles from the nearest big city so I make sure I take it before leaving and if necessary I'll have a return home supply. We're talking 2 lane roads with plenty of wildlife (Animal and human) and Optimized Carnithine keeps my head clear for whatever's around the next curve. The price is better than anywhere else I've seen it and I know I'm getting a pure contaminate free product. Thank you LE!
June 17, 2012
Rated 5 out of 5 Excellent product..makes amazing differe
I take this product everyday and I really love it. I find it makes a tremendous difference in energy and health.
June 3, 2012
Rated 4 out of 5 by ks fitness enthusiast love this product
I take Optimized carnitine every day before going to the gym. It really helps me stay energized and focused through my spin class and beyond.
May 28, 2012
Rated 4 out of 5 by Yoga Girl Provides stamina
Peak ATP is useful when trying to obtain a little extra stimana while exercising for over an hour.
May 18, 2012
Rated 5 out of 5 by Gail a vital part of my workout supplements
taken before my workouts
April 30, 2012
Rated 5 out of 5 Have used this for a number of years.
Use on a daily basis.
April 10, 2012
Rated 4 out of 5 by bee this is an excellent product
this is a must have if you are looking for an energy boost or pick me up
April 1, 2012
Rated 5 out of 5 Outstanding supplement!
Excellent supplement that provides physical energy, mental alertness and overall good health. I use it in the morning before exercise and work, and it prepares me well for both. I've used it for years and I am completely satisfied. Life Extension's customer service is top notch.
March 29, 2012
Rated 5 out of 5 Great Product!!
This product really works. I workout often and It keeps me energized all day long. I take it everyday of my life!
March 29, 2012
Rated 4 out of 5 by Turbo jammer keeps energy level optimal
I recently ran out and did not reorder for several weeks and noticed a drop in my energy level. I definitely won't run out again!
March 29, 2012
Rated 5 out of 5 Awesome supplement!
This supplement really gives the boost to do double the workout
February 22, 2012