Rosemary has been around for a long time, and therefore has a long list of claims regarding its medicinal uses, including use as a tonic, a digestive aid, to treat depression, headaches, and muscle spasms, and as an expectorant, promoter of menstrual flow, and stimulant for production of bile. Externally, its oil made into an ointment has been said to treat rheumatism, sores, eczema, bruises, and wounds. Rosemary taken internally as a medicine can be an irritant to the stomach, intestines, and kidneys, so use it sparingly.
Make Rosemary tea for digestive problems, as an expectorant, to relieve cold symptoms, and as a relaxing beverage that may be helpful for headaches and low moods. Take care to preserve the steam with a tight fitting lid in the preparation process.
Interestingly, an infusion of Rosemary mixed with borax and used cold is said to make a nice-smelling hair wash that can possibly prevent dandruff and stimulate hair growth. A variation of this (for dandruff) is Rosemary combined with mint in vinegar (place the sprigs in a bottle that can be tightly sealed, and let sit for at least a week out of direct sunlight).