From the Apothecary: Rosemary (Salvia rosmarinus)
“There’s rosemary, that’s for remembrance,” said Ophelia to Laertes.
Rosemary is a woody evergreen shrub in the Lamiaceae, or mint, family. You’ll recognise it from its needle-like leaves, resinous scent, and its dignified place in the spice cabinet.
Botanically, rosemary is listed as Salvia rosmarinus, though many herbal texts and product labels still use its older name, Rosmarinus officinalis.
In Western herbalism, rosemary leaf is lauded for its phenolic acids, diterpenes, flavonoids, and essential oil compounds. These are naturally occurring plant constituents studied for their antioxidant activity and a potential influence on digestion, inflammatory signalling, circulation, and cognition.
History & Folklore & A Plant to Remember
Historically, rosemary comes from the Mediterranean and is used as food, fragrance, and in folk medicine. Its intensely aromatic leaves are used in cooking, herbal teas, infused oils, baths, and ceremonial traditions.
Rosemary is associated with memory and remembrance. People used rosemary in weddings, funerals, sickrooms, and protective household bundles. It’s a fragrant evergreen that holds its scent long after it’s cut and dried.
In European folk traditions, rosemary is linked to fidelity, protection, purification, and memory.
Culinarily, rosemary remains one of the great kitchen herbs. It pairs beautifully with potatoes, bread, beans, mushrooms, poultry, lamb, roasted vegetables, olive oil, lemon, and garlic. It makes a darn good cocktail garnish, too.
Medicinally, the leaf has a long-standing role as a digestive and circulatory herb.
Rosemary Leaf Contains:
Rosmarinic acid and other phenolic acids, which are naturally occurring plant compounds. These are studied for antioxidant activity and their potential role in inflammatory signalling.
Carnosic acid and carnosol are diterpenes and strongly associated with rosemary’s antioxidant ability. These compounds are one reason rosemary extract is used in some food preservation systems to help slow oxidation, especially in fats and oils.
Volatile oil compounds, including 1,8-cineole, camphor, alpha-pinene, borneol, and related aromatic compounds. These contribute to rosemary’s distinctive scent, and partially why rosemary is used in aromatherapy, topical preparations, and bath preparations.
Flavonoids and triterpenes are also found in rosemary and contribute to its culinary and medicinal applications.
Practical Uses
Digestive support
Rosemary leaf is traditionally used for digestive discomfort like mild indigestion, bloating, and gas. In European herbal medicine, rosemary leaf is thought to relieve dyspepsia and mild spasmodic disorders of the gastrointestinal tract.
In simpler terms: reach for rosemary when you’re feelin’ gassy.
Rosemary tea is a common preparation. It has a strong, resinous flavour, and is blended with other digestive herbs such as peppermint, lemon balm, ginger, fennel, or chamomile.
Inflammation and Oxidative Stress
Rosemary is rich in antioxidant compounds, particularly carnosic acid, carnosol, and rosmarinic acid. These compounds have been widely studied for their effects on oxidative stress and inflammatory pathways.
This explains why rosemary has such a solid reputation as a protective, warming, and restorative plant.
That antioxidant activity is also why rosemary extract is used in some food and cosmetic formulas. It can help protect oils and fats from oxidation, which is the fancy way of saying it helps slow down rancidity.
Circulation, Muscles, and Joints
Rosemary can be lovely in topical and bath preparations for minor muscular and joint discomfort. Make a rosemary leaf bath for the relief of minor muscular and articular pain to potentially boost circulation and energy.
Its warm, aromatic characteristics make the essential oil of rosemary fantastic in massage oils, bath blends, and topical preparations intended to ease mild stiffness.
Always dilute essential oils properly and do not apply to broken or irritated skin.
Cognition and Memory
Rosemary’s old folk tales surrounding memory have interested modern research teams. A small clinical study in older adults found that a low dose of dried rosemary leaf powder had a beneficial effect on speed of memory. Although, a much higher dose had an impairing effect, so proceed with caution.
Culinary Wellness
Rosemary is easy to incorporate in everyday meals. It has a lovely flavour, aroma, and bioactive plant compounds in an accessible form. Works beautifully in roasted vegetables, soups, stews, beans, breads, savoury biscuits, infused oils, and vinegars. Throw a sprig into a cold glass of lemonade and see how it transforms the flavour. Amazing on a hot summer day.
Safety & Precautions
Rosemary is generally well tolerated in normal culinary amounts.
Rosemary leaf preparations are not recommended for children under 12, or during pregnancy and breastfeeding, unless cleared by your healthcare practitioner. Avoid rosemary if you are allergic.
People with gallstones, bile duct obstruction, inflammation of the gallbladder, liver disease, or other biliary conditions should speak with a healthcare practitioner before using rosemary medicinally.
Rosemary essential oil should not be taken internally. Use caution with concentrated essential oils and always dilute properly.
At Optimum Health, we source high-quality rosemary so you can be confident that you are getting a high quality, organic Rosmarinus officinalis.
As always, connect with us if you have any questions or concerns! We’re here to help.
References
Andrade, J. M., Faustino, C., Garcia, C., Ladeiras, D., Reis, C. P., & Rijo, P. (2018). Rosmarinus officinalis L.: An update review of its phytochemistry and biological activity. Future Science OA, 4(4), FSO283.
European Medicines Agency. (2024). European Union herbal monograph on Rosmarinus officinalis L., folium. European Medicines Agency.
Kew Science. Salvia rosmarinus Spenn. Plants of the World Online. Royal Botanic Gardens, Kew.
Nieto, G., Ros, G., & Castillo, J. (2018). Antioxidant and antimicrobial properties of rosemary. Medicines, 5(3), 98.
Pengelly, A., Snow, J., Mills, S. Y., Scholey, A., Wesnes, K., & Reeves Butler, L. (2012). Short-term study on the effects of rosemary on cognitive function in an elderly population. Journal of Medicinal Food.
Veenstra, J. P., Johnson, J. J., & O’Neil, C. E. (2021). Rosemary (Salvia rosmarinus): Health-promoting benefits and food preservative properties. Nutrients, 13(10), 3330.