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Oleic acid is an omega-9 fatty acid. It can be made by the body. It is also found in foods. Highest levels are found in olive oil and other edible oils.

Oleic acid is most commonly used for preventing heart disease and reducing cholesterol. It is also used for preventing cancer and other conditions, but there is no good scientific evidence to support these other uses.

Don't confuse oleic acid with diets and oils containing oleic acid, such as the Mediterranean diet, olive oil, and canola oil or sunflower oil made to have higher levels of oleic acid. See separate listings for these topics.

Oleic acid is a type of fatty acid. Oils with oleic acid are used to replace saturated fats in the diet. Oleic acid might improve heart conditions by lowering cholesterol and reducing inflammation.

When taken by mouth: Oleic acid is LIKELY SAFE when used in food amounts. There isn't enough reliable information to know if oleic acid is safe when taken by mouth as a medicine.

Special Precautions & Warnings:

Pregnancy and breast-feeding: There isn't enough reliable information to know if oleic acid is safe to use as a medicine when pregnant or breast-feeding. Stay on the safe side and stick to food amounts.

There are no known interactions with medications. Before taking this product, talk with your health professional if you take any medications.

Herbs and supplements that might lower blood sugar: Oleic acid might lower blood sugar. Using it with herbs or supplements that also have this effect might lower blood sugar too much. Other herbs and supplements that might lower blood sugar include banaba, bitter melon, cowhage, ginger, glucomannan, goat's rue, fenugreek, kudzu, willow bark, and others.

There are no known interactions with foods.

The following doses have been studied in scientific research:

ADULTS

BY MOUTH:

  • For heart disease: Using cooking oils that provide 20 grams (1.5 tablespoons) of oleic acid per day in place of other saturated fats and oils has been used.
  • For high cholesterol: Cooking oils that contain high amounts of oleic acid in place of other saturated fats and oils has been used.

18:1 n-9, 9-Octadecenoic Acid, Cis-9-Octadecenoic Acid, (9Z)-Octadec-9-Enoic Acid, Octadec-9-Enoic Acid, Octadecenoic Acid.

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