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Kimberly Tenner
November 29, 2019

MusclePharm Carnitine Core Review

MusclePharm Carnitine Core

The best-selling, highly rated MusclePharm supplement company recently introduced MusclePharm Carnitine Core. This liquid dietary supplement aims to transform fat stores into energy, simultaneously enhancing weight loss and workouts.

Any dietary supplement that promises two effects at once gets my attention quickly. But I always do my research before trusting a product’s advertised claims. Keep reading to see what I discovered about MusclePharm Carnitine Core.

MusclePharm Carnitine Core’s Ingredients

MusclePharm Carnitine Core claims to use a balanced formula of raspberry ketone and several types of carnitine to achieve results. I think each ingredient deserves inspection on its own merits.

L-Carnitine Base
L-Carnitine is an amino acid compound used to convert fat into energy. The theory is that supplemental carnitine increases the amount of fat the body burns. But despite 20 years of research, this theory remains unproven. [1]

N-Acetyl-L-Carnitine is a type of carnitine with a slightly different chemical structure. This type of carnitine might be more bioavailable than other forms. [2]

A 2011 study focused on this type of carnitine and its effects on athletic performance. Over six months, L-carnitine-L-tartrate supplementing resulted in more carnitine in muscle fibers and improved metabolism and athletic performance. [3] This study is good, but more research is needed to verify its results.

Raspberry Ketone
Raspberry ketone is a chemical found naturally in several fruits. This chemical has a structure similar to capsaicin and synephrine, both of which are thought to convert fat into energy. Raspberry ketone may also have this effect. But so far the scientific evidence is not definitive.

This type of carnitine increased power and decreased lactic acid in a 2009 study. [4] But this study focused on trained athletes performing sprints. Not everyone is guaranteed the same results from propionyl-L-carnitine.

All these forms of carnitine have at least some evidence that they positively affect athletic ability and energy. But I’m not convinced that any of them are proven fat burners. The same goes for raspberry ketone. The evidence just isn’t strong enough.

MusclePharm Carnitine Core’s Price

Even though it is a new product, MusclePharm Carnitine Core already sells at competitive prices. I found plenty of websites selling this product, none for more than $15. Since each bottle of MusclePharm Carnitine Core contains 30 servings, that’s less than $0.50 per serving.

MusclePharm Carnitine Core’s Directions

MusclePharm Carnitine Core is a liquid dietary supplement. Taking it is much like taking a liquid cough syrup or cold medicine. Just pour out a tablespoonful (about half an ounce) and gulp it down 1 to 3 times a day. If the flavor bothers you, MusclePharm Carnitine Core also mixes well with juice or another beverage.

Make sure you shake the bottle well before you take MusclePharm Carnitine Core. This product needs to be refrigerated once opened.

MusclePharm Carnitine Core’s Reviews

Since MusclePharm Carnitine Core has only been available for a few months, I didn’t expect to find any reviews from actual users. Surprisingly, I did find a few on

So far, consumer feedback on MusclePharm Carnitine Core is extremely positive. A noticeable boost in energy was the most commonly reported effect. Several reviewers also noted some fat loss, though this was less extreme. A strong, unpleasant flavor was the most common complaint.

These reviews are a good starting point. But MusclePharm Carnitine Core needs a lot more positive feedback before I believe it’s a potent dietary supplement. I’d especially like more evidence of MusclePharm Carnitine Core’s fat burning abilities.

Summary of MusclePharm Carnitine Core

MusclePharm Carnitine Core fails to convince me it’s an incredibly effective energy and fat-burning supplement. Carnitine and raspberry ketone simply lack scientific evidence that they can produce these effects over and over. And not enough people have commented on MusclePharm Carnitine Core’s effectiveness to override this lack of evidence.

On the positive side, MusclePharm Carnitine Core is definitely an inexpensive carnitine supplement option. If you’re looking to test the effects of carnitine for yourself, MusclePharm Carnitine Core might be a good product to try.


[1] Sarao C. “N-Acetyl-L-Cysteine and Acetyl-L-Carnitine.” Livestrong. 2012 Jan 5. Available from:

[2] Higdon J. “L-Carnitine.” Linus Pauling Institute, Oregon State University. 2002 Oct. Available from:

[3] Wall BT, Stephens FB, Constantin-Teodosiu D, Marimuthu K, Macdonald IA, Greenhaff, PL. “Chronic oral ingestion of L-carnitine and carbohydrate increases muscle carnitine content and alters muscle fuel metabolism during exercise in humans.” J Physiol. 2011 Feb 15. Available from:

[4] Jacobs PL, Goldstein ER, Blackburn W, Orem I, Hughes JJ. “Glycine propionyl-L-carnitine produces enhanced anaerobic work capacity with reduced lactate accumulation in resistance trained males.” J Int Soc Sports Nutr. 2009 Apr 2. Available from:

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