L-carnitine is a naturally occurring amino acid derivative that's often taken as a weight loss supplement. It has several benefits for health. Learn more.

L-carnitine supplements can sometimes cause nausea, diarrhea, cramps, or vomiting. High doses can make you smell "fishy." Risks. If you have Alzheimer's disease, a seizure disorder, or kidney ...

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Also known as levocarnitine, L-carnitine is a chemical that the brain, liver and kidneys make naturally. It’s also found in foods like beef, chicken, cheese, white fish and milk.

How To Take An L-Carnitine Supplement Most L-carnitine supplements come in capsule, tablet, or powder form. A typical L-carnitine dose is between 500 to 2,000 milligrams taken once daily, Zenker says.

Read the ingredient label on any energy drink and odds are fairly good that, among other arcane items, you’ll come across something called L-carnitine. Also sold in supplement form, L-carnitine ...

L-carnitine supplements may produce energy for workouts, improve heart health, and help PCOS symptoms. Dietitians explain whether you should take it. Amino Acid Supplements Are Trending For A Reason.

Taken by professional athletes and those with serious fitness goals, L-carnitine is an amino acid that preserves fuel for muscles and promotes the breakdown of fats into energy.