L carnitine tartrate vs Acetyl l carnitine

Acetyl L-Carnitine v L-Carnitine Tartrate


What is L-Carnitine?

In order for us to distinguish the difference between Acetyl L-Carnitine and L-Carnitine Tartrate we must first understand what these compounds are, and how they are produced throughout the body. Firstly, L-Carnitine is produced throughout the liver and kidneys as a result of converting the amino acids Lysine and Menthionine[1]. It is to be noted that L-Carnitine is stored all throughout the body[2] and the primary sources come from red meat and other animal products, however smaller amounts can also be found in plant products.   

L-Carnitines' main benefits are not just associated with athletic performance; although Carnitine plays a crucial role in the oxidation of fat cells, which results in the body being able to utilise fat for energy more readily[3]. Carnitine also plays a crucial role in brain support[4], and acts as a powerful antioxidant which attempts to protect against age related degeneration[5].

What are the differences between Acetyl L-Carnitine and L-Carnitine Tartrate


Now that we have an understanding of what the broader term of L-Carnitine is and does, we can now look at the main differences between the two types we are focusing on, Acetyl L-Carnitine and L-Carnitine Tartrate.

The primary differences between the two types are Carnitine are their associated applications - Most often Acetyl L-Carnitine is commonly used and associated with the improvement of cognitive function and anti-aging/anti oxidant effects Acetyl L-Carnitine has been trialled in studies in attempt to improve the memory of those suffering from Alzheimer's disease[6].

L-Carnitine Tartrate on the other hand is most commonly used for its potent fat burning effects. Studies have shown that through supplementing with L-Carnitine Tartrate the body is greater able to oxidise and therefore utilise fat-cells as a means of energy production, a striking difference to Acetyl L-Carnitine which does not produce the same effect on fat cells. L-Carnitine Tartrate has also been shown to positively affect the body's response to insulin after a high carbohydrate meal[7]


What are the benefits of supplementing with the two types of L-Carnitine

Acetyl L-Carnitine

The health benefits associated with Acetyl L-Carnitine are most often associated with cognitive functioning and even anti-aging. Studies have suggested that supplementing with this form of Carnitine can help improve memory, reduce stress and fight off neuron degeneration throughout the brain and also the nervous system.

 Acetyl L-Carnitine has a distinct ability to cross the blood-brain barrier where it acts as a potent antioxidant, protecting against age related cell death throughout the brain[8]. Acetyl L-Carnitine may also then have a distinct role in the free-radical theory of aging, which, without going into too much detail basically asserts that advancing age is associated with excessive cell death caused by free radicals[9]- Acetyl L-Carnitine assists in the removal of free-radicals from the body. Click here to buy Acetyl l carnitine

L-Carnitine Tartrate

The benefits of L-Carnitine Tartrate do not share the same characteristics as with Acetyl L-Carnitine. L-Carnitine Tartrate has been shown to drastically improve the body's ability to oxidize fat cells which assists in the production of energy and burning of fat. Without enough L-Carnitine in the system the body is unable to effectively transport fat cells into the mitochondria, which can therefore lead to the accumulation of fat due to the inability for them to be broken down and used as energy[10].

L-Carnitine Tartrate has also been shown in studies to reduce the amount of muscle related oxidation during intense bouts of exercise[11], what this means is that you are able to effectively train harder and for longer, while also maximising your fat loss potential at the same time. Click here to buy L -Carnitine Tartrate


Supplement protocols - Timing and Dosages

L-Carnitine Tartrate

It is recommended to consume L-Carnitine Tartrate in the presence of carbohydrates, this is due to the effect raised insulin levels has on the nutrients uptake. A 1gram (1 scoop) serving will suffice most customers needs, however dosages of two to three grams are optimal for effectiveness. Click here to buy L -Carnitine Tartrate

Acetyl L-Carnitine

In order for Acetyl L-Carnitine to be more readily assimilated and utilised by the body it is recommended that it be taken in the absence of food on an empty stomach, this will help it become readily available to the body. Similarly, a base dosage of 1 gram (1 scoop) is adequate. Click here to buy Acetyl l carnitine

Pure Lean Nutrition sources all its products from the highest sources available and always assures quality. We personally inspect and visit our warehouses and factories regularly to ensure we bring the most pure and potent product to the customer. To further ensure our customers receive the best product available, most of our supplements are individually tested by 3rd party laboratories.



[1] Rebouche CJ. Kinetics, pharmacokinetics, and regulation of L-carnitine and acetyl-L-carnitine metabolism. Ann N Y Acad Sci. 2004;1033:30-41

[2] Jim Stoppani. 2015. Your expert guide to L-Carnitine. [ONLINE] Available at:http://www.bodybuilding.com/fun/your-expert-guide-to-l-carnitine.html. [Accessed 04 March 16].

[3] Wutzke KD, Lorenz H. The effect of l-carnitine on fat oxidation, protein turnover, and body composition in slightly overweight subjects. Metabolism. 2004 Aug 53(8): 1002-6

[4] C. Panneerselvam, P. Rani. Effect of L-Carnitine on Brain Lipid Peroxidation and Antioxidant Enzymes in Old Rats. The Journals of Gernotology. 2001. series A,vol 57, issue 4.

[5] Bernard A, et al. L-carnitine supplementation and physical exercise restore age-associated decline in some mitochondrial functions in the rat. J Gerontol A Biol Sci Med Sci. 2008 Oct;63(10):1027-33.

[6] Jay W. Pettegrew, Clinical and neurochemical effects of acetyl-L-carnitine in Alzheimer's disease 1995. Neurobiology of aging. Vol 16, issue 1

[7] Galloway SD, Craig TP, Cleland SJ. Effects of oral L-carnitine supplementation on insulin sensitivity indices in response to glucose feeding in lean and overweight/obese males. Amino Acids. 2011 Jul;41(2):507-15.

[8] C. Panneerselvam, P. Rani. Effect of L-Carnitine on Brain Lipid Peroxidation and Antioxidant Enzymes in Old Rats. The Journals of Gernotology. 2001. series A,vol 57, issue 4.

[9] D. Harman. Free radical theory of aging. Mutation Research/DNAging. 1992, Vol 275, Issue 3-6.

[10] Rebouche CJ. Carnitine. In: Modern Nutrition in Health and Disease, 9th Edition (edited by Shils ME, Olson JA, Shike M, Ross, AC). Lippincott Williams and Wilkins, New York, 1999, pp. 505-12.     

[11] Spiering BA, et al. Effects of L-carnitine L-tartrate supplementation on muscle oxygenation responses to resistance exercise. J Strength Cond Res. 2008 Jul;22(4):1130-5.

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