Carnitine Supplements for Cellular Energy

Promote Cellular-Energy Production

Carnitine helps your mitochondria produce cellular energy quickly and efficiently for brain, heart and whole-body health.

3 Reasons Why Everyone Should Take Our Carnitine Supplements

  • Support cellular energy production & availability
  • Promote brain & heart health
  • Support youthful exercise recovery

Our Recommendation

Optimized Carnitine, 60 vegetarian capsules - Life Extension

Optimized Carnitine

Promotes heart & brain health

60 capsules


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We pride ourselves on giving our customers the tools they need to make important health decisions. So, let’s delve into the various forms of carnitine to determine which is right for you.

L-Carnitine, 500 mg, 30 vegetarian capsules - Life Extension

L-Carnitine & Acetyl-L-Carnitine

L-Carnitine helps move fatty acids across the mitochondrial membrane, supporting cellular energy metabolism. It also supports memory & cognitive health. Acetyl-L-Carnitine encourages the release of dopamine, helping it to bond to receptors, and provides antioxidant support throughout the body.

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Optimized Carnitine, 60 vegetarian capsules - Life Extension

Optimized Carnitine

Optimized Carnitine has three advanced forms of carnitine—Acetyl-L-Carnitine, Acetyl-L-Carnitine Arginate and Propionyl-L-Carnitine (PLC)—to optimize cellular energy production for a healthy heart and brain and exercise recovery. PLC also helps support physical performance and male sexual function.

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Help maintain cellular energy metabolism and support optimum functioning of mitochondria with L-Carnitine and Acetyl-L-Carnitine products, which assist in the intracellular transport of fatty acids from the cell fluid into the mitochondria and inhibits excess accumulation of cellular debris.

Supports brain & nerve health & youthful cellular energy

500 mg, 100 vegetarian capsules
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Life Extension’s Acetyl-L-Carnitine supplement promotes youthful cellular energy metabolism and supports mood and nervous system well-being, among other benefits.

Helps maintain healthy cellular energy metabolism

500 mg, 30 vegetarian capsules
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Adding L-Carnitine to your supplement regimen provides a host of potential health benefits associated with aging. It starts with supporting mitochondria, which power every cell in your body.

Advanced carnitine for cell energy & brain health support.

90 capsules
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Acetyl-L-Carnitine Arginate is an advanced carnitine supplement that promotes youthful cellular energy metabolism and supports brain and nerve health.

Optimized Carnitine is the only formula from Life Extension that includes Propionyl-L-Carnitine for vascular health and function benefits, as well as Acetyl-L-Carnitine and Acetyl-L-Carnitine Arginate to optimize cellular energy production and heart & brain health.

Promotes heart & brain health

60 capsules
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Our Optimized Carnitine provides three clinically studied forms of carnitine that work together to help you recover from exercise quicker and support heart, brain and nervous system health.

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What is L-carnitine?

L-carnitine is an important nutrient that benefits your whole body, helping you produce more cellular energy while also supporting brain and heart health. This amino acid is naturally produced by the body, but production declines over time. Incorporating this cellular energy supplement into your wellness routine is a great way to retain youthful energy levels.

L-carnitine is produced by the liver and kidneys with support from vitamin C and animal proteins, including beef, chicken and fish. Taking a cellular energy supplement like L-carnitine is especially important for those on a vegan or vegetarian diet, or for those who are not able to produce enough
L-carnitine on their own.

Although L-carnitine is the most common form of this amino acid present in the body, Acetyl L-carnitine or ALCAR, also plays a vital role in your body's metabolism and helps protect your nervous system.

Does L-carnitine work?

L-carnitine supports your heart by supporting already-healthy blood pressure and promoting a healthy inflammatory response. L-carnitine has also been shown to support exercise performance by promoting exercise recovery time, muscle oxygen supply and healthy stamina.

On the other hand, Acetyl L-carnitine is a smart choice for those looking for brain boosting benefits. Studies have found that ALCAR has been shown to help support mental function while helping to sharpen learning.

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