L-Carnitine. User Reviews & Best Deals on Amazon: RSP L-Carnitine 500mg, 100% Stimulant-Free Metabolism Enhancement for Men and Women, 120 Capsules RSP Nutrition


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  • Product Dimensions: 3 x 3 x 4.8 inches
  • Shipping Weight: 4 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • UPC: 852113002019


CLINICALLY PROVEN - L-Carnitine is a natural amino acid found in a variety of food sources - we just concentrated it into an easy to take capsule for maximum results; COMPREHENSIVE SUPPORT – L-Carnitine has been shown to help the body burn fat more effectively, enhance athletic performance, and reduce fatigue and muscle soreness; TESTED & GMP CERTIFIED – RSP’s L-Carnitine, like all of our products, is thoroughly tested for quality and consistency and manufactured in a GMP certified facility; PURITY – Our L-Carnitine doesn’t contain any artificial colors, preservatives, or fillers. We wouldn’t sell you anything we wouldn’t take ourselves

User reviews

I don’t write reviews very often on any websites or products, but having tried this product then changing to a different brand made me realize the potency and benefit of this product. I use 3-4G, capsules opened and mixed with a small amount of beet powder & water. I read some studies about this dose for runners and cyclists. Wow! What a difference this makes for my run. I feel great. Not buzzed. I can just breath better, and the workout is easier. I tried a very well-known brand that is 3rd party tested and no banned substances, etc…, and I couldn’t get much out of even 4G. It was as if I didn’t take anything. I’m not doubting the purity of either product. I think it’s probably the delivery of the amino in my system. So, great product and seems to hit me at the precise time I need it.
I have been using RSP's L-Carnatine on and off throughout my routine. I like the energy it provides without making me feel jittery or nauseous. With its use I have noticed a reduction in my overall body fat percentage and I am able to maintain that with RSP and my regular exercise routine. On top of the product working great, RSP has been wonderful to deal with as a whole. I highly recommend their products.
I've used a lot of different brands of Carnitine and RSP has worked the best for me. I used this to change Carnitines to shake up my current supplement regimine. With no diet change, after about a week I noticed an increase in alertness as well as an increase in metabolism. Definitely worth a try!
Began taking RSP's L-Carnitine and have noticed that my energy during the day and during workouts has improved considerably! I have increased my regimen considerably after a couple weeks on L-Carnitine and have been able to achieve exponential stamina. I definitely recommend to anyone who is taking another brands L-Carnitine and not seeing results as well as someone who hasn't tried it at all!
Big difference in my cardio, love this product.
I have been looking for a good Carnitine supplement to take pre workout and I am so glad I found this product. The pill sizes are not large so they are easy to take. Also, the product does work with a well balanced diet of course. I would say it took about a full bottle to start seeing and feeling affects, but that is expected. Fantastic product!
This product is really helping me lose weight. The best part is...it’s stimulant-free. I’m losing weight without the shakes.

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Bob Rickman
Bob Rickman is a professional fitness trainer and gym instructor and he typically does the following: Demonstrates how to carry out various exercises and routines. Watches clients do exercises and show or tell them correct techniques to minimize injury and improve fitness. Gives alternative exercises during workouts or classes for different levels of fitness and skill. Monitors clients’ progress and adapt programs as needed. Explains and enforce safety rules and regulations on sports, recreational activities, and the use of exercise equipment. Gives clients information or resources about nutrition, weight control, and lifestyle issues. Gives emergency first aid if needed. On his free time he's working as an independent writer and reviewer in close collaboration with FitnessReport.com


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