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Propionyl-L-Carnitine

How does Propionyl-l-carnitine work?

Propionyl-L-carnitine helps the body produce energy. It is important for heart function, muscle movement, and many other body processes. It also seems to help increase circulation.

Are there safety concerns?

Propionyl-L-carnitine is safe for most people when taken by mouth or given intravenously by a healthcare professional. It can cause nausea, vomiting, stomach pain, weakness, and chest pain (angina). It can also cause a "fishy" odor of the urine, breath, and sweat.

Special Precautions & Warnings:

Pregnancy and breast-feeding: Not enough is known about the use of propionyl-L-carnitine during pregnancy and breast-feeding. Stay on the safe side and avoid use.

"Underactive thyroid" (hypothyroidism): There is a concern that propionyl-L-carnitine might make hypothyroidism worse or thyroid hormone treatment less effective. This is because a related chemical, L-carnitine, seems to interfere with thyroid hormone. If you have hypothyroidism, don't take propionyl-L-carnitine.

Seizures: Some people who have a history of seizures have reported an increase in the number and severity of seizures after taking L-carnitine by mouth or intravenously (by IV). There is a concern that this might also occur with propionyl-L-carnitine, because it is a similar chemical.

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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