L-Carnitine Reviews – Does it really Work As Advertised?

L-carnitine is one of the most popular ingredients in weight loss supplements, as it is used in functions of the body like muscle movement and brain function.

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In This Review

L-carnitine Overview

L-carnitine is currently one of the most popular ingredients in weight loss supplements. It is an amino acid or a building block for protein which is naturally produced by the body. L-carnitine supplements are available for treating low levels of the amino acid in the body.

However, in recent years because of researches proving its importance when it comes to the breakdown of fat, it has become one of the most popular supplements for weight loss. There are many ingredients used in weight loss products. About a decade ago, the hottest ingredient was ephedra.

However, the Food and Drug Administration of the United States banned this ingredient because of the dangers related to it. Since then, green tea and other natural substances have basked in the limelight.


*All individuals are unique. Your results can and will vary.

How Does It Rate?

Overall Rating: 3.5

Value for Cost

3.3/5Value for Cost
Return Policy

3.4/5Return Policy


Brand Highlights

  • Bodybuilding.com was founded in 1999 with a single promise: trust.
  • The company is not well-known, and it is relatively new, so they still don’t have an established reputation for offering quality supplements.
  • There are several studies indicating that supplementing with this amino acid is really beneficial for weight loss.


mct wellness

*All individuals are unique. Your results can and will vary.

Key Ingredients

  • L-Carnitine Tartrate (Carnipure)
  • Hypromellose
  • Magnesium Stearate
  • Silica


  • There are some studies indicating that L-carnitine can really help in the fat burning process.
  • It is a naturally occurring substance in the body so it is safe.
  • Can also help improve physical performance.
  • Helps increase energy levels.


  • Some studies indicate that it is only helpful for people who have deficient levels of the amino acid.
  • Should be used with other ingredients to improve effectiveness.
  • Some experts believe too much of this amino acid can cause adverse effects on the body.

How Does L-Carnitine Work?

L-carnitine basically helps the body in the process of producing energy. It is vital in many normal functions of the body like muscle movement and brain function along with many other normal body processes.

It is a potent fat burner since it helps transport fat into cells for energy use.

By increasing the levels of L-carnitine in the body, the fat burning process becomes more efficient thus enhanced weight loss is the effect.

It will also help increase energy levels and improve physical performance. There are several studies indicating that supplementing with this amino acid is really beneficial for weight loss.

L-Carnitine Ingredients – Are they Safe & Effective?

L-Carnitine Tartrate (Carnipure)

– L-carnitine tartrate has been shown to improve athletes’ relatively short-term recovery. However, research on the long-term effects in the general population is lacking. [1]


– The studies suggest that Hypromellose not only reduces body weight but also normalises the metabolic abnormalities associated with obesity. The findings also suggest that the effects of Hypromellose on glucose and lipid homeostasis in B6 mice are mediated by improvements in leptin sensitivity caused by reduced fat absorption. [2]

Magnesium Stearate

– According to the National Center for Biotechnology 2,500 milligrammes of magnesium stearate per kilogramme of body weight is considered safe. [3]


Research shows that, porous silica promotes an anti-obesity effect by acting locally in the gut to limit fat and carbohydrate digestion and absorption. [4]

L-Carnitine FAQ’s

Q: What are the Dos and Don’ts of Taking L-carnitine for Fat Loss

A: It is very important to purchase a quality L-carnitine supplement. Low-quality supplements can negatively affect potency and cause side effects like allergic reactions.

Also, it is important to follow the dosage of the supplement and avoid an overdose.

You May Also Want To Read – Hydroxyelite Review and Green Tea Fat Burner Review


mct wellness

*All individuals are unique. Your results can and will vary.

L-Carnitine Reviews – Final Verdict

L-carnitine is clinically proven to be effective in enhancing the fat-burning process.

However, it is not as effective when used alone. It would be best to look for products that also contain other fat loss ingredients like green tea extract and caffeine if you want considerable results.

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Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Consumer Health Digest. We do not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer. *All individuals are unique. Your results can and will vary.

Customer Reviews for L-carnitine

L-Carnitine Reviews – Does it really Work As Advertised?

Customer Reviews & Ratings

2.0 out of 5

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  1. Charley

    The L-Carnitine product is pretty horrible and not worth the money
    L-Carnitine not worth the money. I ordered L-Carnitine in the hopes of reducing my appetite, but it had the opposite effect. I only wanted sweets and junk food. I threw them out right away because they don’t work.

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180 Capsules
L-Carnitine Tartrate (Carnipure), Hypromellose, Magnesium Stearate , and Silica

4 Sources

We review published medical research in respected scientific journals to arrive at our conclusions about a product or health topic. This ensures the highest standard of scientific accuracy.

[1] Stefan M, Sharp M, Gheith R, et al. L-Carnitine Tartrate Supplementation for 5 Weeks Improves Exercise Recovery in Men and Women: A Randomized, Double-Blind, Placebo-Controlled Trial. Nutrients. 2021;13(10):3432. Published 2021 Sep 28. doi:10.3390/nu13103432
[2] Hung SC, Anderson WH, Albers DR, Langhorst ML, Young SA. Effect of hydroxypropyl methylcellulose on obesity and glucose metabolism in a diet-induced obesity mouse model. J Diabetes. 2011 Jun;3(2):158-67. doi: 10.1111/j.1753-0407.2011.00118.x. PMID: 21599870.
[3] Hobbs CA, Saigo K, Koyanagi M, Hayashi SM. Magnesium stearate, a widely-used food additive, exhibits a lack of in vitro and in vivo genotoxic potential. Toxicol Rep. 2017;4:554-559. Published 2017 Oct 16. doi:10.1016/j.toxrep.2017.10.003
[4] Silica: https://www.sciencedaily.com/releases/2022/10/221024092659.htm

**This is a subjective assessment based on the strength of the available informations and our estimation of efficacy.

*Result may vary. If you are pregnant, nursing, have a serious medical condition, or have a history of heart conditions we suggest consulting with a physician before using any supplement. The information contained in this website is provided for general informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease and should not be relied upon as a medical advice. Always consult your doctor before using any supplements.

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