Shark liver oil

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Shark liver oil is obtained from sharks caught for food purposes only, living in cold, deep oceans. The liver oil from sharks has been used by fishermen for centuries as a folk remedy for general debility, for healing wounds, sores, irritations of the respiratory tract and the alimentary canal and for lymph node swelling.

It has also been used as a means of weather prediction on the islands of Bermuda for many centuries.[citation needed]

It is one of the ingredients used in hemorrhoid creams such as Preparation H.

Shark liver oil is rich in alkylglycerols, which are naturally found in mother's milk and in bone marrow. It also contains pristane, squalene, vitamins A and D, omega-3 fatty acids, triglycerides, glycerol ethers, and fatty alcohols.