Garlic oil is used as a nutritional supplement, and is sometimes purveyed in the form of capsules, which may be diluted with other ingredients.Some commercial preparations are produced with various levels of dilution, such as a preparation that contains 10% garlic oil.Herbal folklore holds that garlic oil has antifungal and antibiotic properties, but there is no high-quality clinical research to indicate such effects exist. It is also purveyed in health food stores as a digestive aid.

It can also be used as an insecticide, whereby it is diluted with water and sprayed on plants.

Stabilized garlic flavor blend is a proprietary mixture of dehydrated garlic powder infused with garlic oil, which increases the flavor of the garlic powder.