Ingredient
Carnitine
What is Carnitine?
Carnitine is a naturally occurring amino acid derivative that's often found in meat and dairy products. It's also synthesized in the human body from the amino acids lysine and methionine.
Carnitine is used primarily because it's thought to aid in energy production by transporting fatty acids into the mitochondria, the powerhouses of cells. The evidence on its effectiveness, particularly for improving athletic performance or reducing fatigue, is mixed, with some studies showing benefits in specific populations and others showing no effect.
When you see carnitine on a label, it is likely added to boost the nutritional profile of a product, particularly those marketed for energy support or weight management.
Commonly found in: Dietary supplements, Sports drinks, Energy bars, Weight management products, Protein shakes
What to watch
- High doses may cause gastrointestinal discomfort including nausea and diarrhea.
- There have been reports of a 'fishy' body odor from supplemental use due to trimethylamine production.
Benefits
- May support fat metabolism and energy generation in cells.
- Some evidence suggests potential benefits for heart health in specific populations.
Carnitine is classified as a dietary supplement in the U.S. and is not regulated as strictly as pharmaceuticals.
Research on carnitine's efficacy for energy enhancement and weight loss shows mixed results, indicating benefits in certain cases but not universally.
Carnitine is normally derived from animal sources, so vegans should check for vegan-certified sources.
Sources: Carnitine
Scout's take
Carnitine is an amino acid derivative used in skincare for its potential antioxidant properties. It may help protect the skin from environmental stressors. Its benefits in topical application are not well-established.
The case against
There are minimal risks, though it may cause irritation in very sensitive skin.
from the analysis of Eucerin Advanced Repair Lotion for Very Dry Skin BottleThe case for
Carnitine may provide antioxidant protection to the skin.
from the analysis of Eucerin Advanced Repair Lotion for Very Dry Skin BottleFound in 1 product
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