Carnitine Supplements for Cellular Energy

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

Optimized Carnitine

Promotes heart & brain health


Energy Management

Keep the pep in your step with these supplements for optimal cellular energy metabolism and healthy mitochondrial function.

Heart Health

Promote your best cellular energy production as well as healthy heart and vascular function and brain health with this optimized formula.

Related Products

3 Reasons Why Everyone Should Take Our Carnitine Supplements

  1. Support cellular energy production & availability
  2. Promote brain & heart health
  3. Support healthy exercise recovery

Editor's Picks

More About Carnitine

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 healthy 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 promote your nervous system and healthy mood.

Does L-carnitine work?

L-carnitine supports your heart by supporting already-healthy blood pressure and helping to maintain healthy body fat composition. L-carnitine has also been shown to support exercise performance by supporting optimum functioning of mitochondria and your body’s energy production.

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.

Need help selecting what's best for you?

Life Extension - Why We Do It?

The Best Supplements Science Can Offer

When putting something in your body, you should be confident that you’re getting the nutritional benefits your body deserves. We've been delivering the highest-quality products—backed by science and formulated with the finest ingredients—for over 40 years.

What Matters to You, Matters to Us

We're committed to empowering you to live a healthier life. Whether it’s finding sustainable partners for our ingredients or funding the latest anti-aging research, we're all about your health & wellness.

Highly Recommended

98% of our customers recommend us to family and friends. We're very proud of that because our loved ones matter to us—and we're willing to bet you feel the same way.

Product Transparency

40 years of research dedicated to bringing you premium, scientifically-validated formulations.