Juniper is a short to a medium-height tree that grows wild in some parts of Europe, North America, and Asia. There are many varieties of juniper, but Juniperus communis is the most common in North America.
People use the juniper berry to make medicine. Medicinal preparations include the extract of juniper berry, as well as the essential oil of juniper berry. Don't confuse juniper berry oil with cade oil, which is distilled from juniper wood (Juniperus oxycedrus).

Juniper is used for digestion problems including upset stomach, intestinal gas (flatulence), heartburn, bloating, and loss of appetite, as well as gastrointestinal (GI) infections and intestinal worms. It is also used for urinary tract infections (UTIs) and kidney and bladder stones. Other uses include treating snakebite, diabetes, and cancer.

Some people apply juniper directly to the skin for wounds and for pain in joints and muscles. The essential oil of juniper is inhaled to treat bronchitis and numb pain.

In foods, the juniper berry is often used as a condiment and a flavoring ingredient in gin and bitter preparations. The extract and essential oil are used as a flavoring ingredient in foods and beverages.

In manufacturing, juniper oil is used as a fragrance in soaps and cosmetics.

Juniper extract and juniper oil are used in cosmetics including lipstick, foundation, hair conditioners, bath oils, bubble bath, eye shadow, and many other products.