• Rosemary is widely used as a food seasoning and preservative. • Rosemary extract exhibits antioxidant, antibacterial, anti-inflammatory, hepatoprotective and chemoprotective activity in various in vitro and experimental models. • Rosemary oil is widely used to assist in concentration and memory and to stimulate blood flow. • Traditionally, it has been used to relieve stomach, gall bladder and menstrual cramps, but its internal use has not yet been significantly investigated in controlled studies. • Rosemary is generally safe when the leaves are consumed in dietary amounts, although excessive intake may cause stomach irritation and seizures in susceptible people.
Archive for category Rosemary'
Adverse Reactions Rosemary is generally recognised as safe for human consumption in quantities used as food. Consuming large amounts of rosemary may cause stomach and intestinal irritation, as well as seizures, owing to the high content of highly reactive monoterpene ketones, such as camphor. Topically, rosemary is not considered to be highly allergenic; however allergic contact dermatitis from rosemary has been reported, as has asthma from repeated occupational exposure. Rosemary essential oil should be diluted before topical application to minimise irritation. Significant Interactions Controlled studies are not available; therefore, interactions are based on evidence of activity and are largely theoretical and speculative. IRON Rosemary extracts are widely used as an antioxidant to preserve foods; however, the phenolic-rich extracts may reduce the uptake of dietary iron. Separate doses by 2 hours. ANTICOAGULANTS Increased bruising and bleeding theoretically possible— use caution. DRUGS DEPENDENT ON P-GLYCOPROTEIN TRANSPORT Theoretically, increased drug uptake can occur with those drugs dependent on P-glycoprotein transport. The clinical significance of this finding remains to be tested, although it has Read more […]
INCREASED MENTAL CONCENTRATION One of the main traditional uses of rosemary oil is to increase mental concentration and memory. This is supported by a RCT of 140 subjects that found that rosemary produced a significant enhancement of performance for overall quality of memory and secondary memory factors, with an impairment of speed of memory compared with controls. Further support comes from an observational study in 40 adults where 3 minutes’ exposure to rosemary essential oil was seen to decrease frontal alpha and beta power, suggesting increased alertness. Subjects felt more relaxed and alert, had lower anxiety scores and were faster, but not more accurate, at completing maths computations. A small, case series of 10 subjects also found that rosemary essential oil had positive effects on mood concentration and memory. ALOPECIA The traditional use of rosemary to stimulate hair growth is supported by a 7-month, randomised double-blind study of 86 patients that found rubbing oils (thyme, rosemary, lavender and cedarwood) into the scalp helped with alopecia for 44% of patients versus 15% of controls. Although promising, the role of rosemary as a stand-alone substance in achieving these results is unclear. ANTISPASMODIC Rosemary Read more […]
Common Name Rosemary Other Names Compass plant, compass-weed, garden rosemary, old man, polar plant, Rosmarini folium Botanical Name / Family Rosmarinus officinalis (family Labiatae or Lamiaceae) Plant Part Used Fresh or dried leaf Chemical Components Phenolic acids and diterpenoid bitter substances, including carnosic acid and carnosol, triterpenoid acids, flavonoids, tannins and volatile oils (0.5-2.5%) that consist of cineole, pinene, terpineol, camphor, camphene, borneol and bornyl acetate. Rosemary has also been found to contain high amounts of salicylates. Historical Note Since ancient times rosemary has been used as a tonic and stimulant. The ancient Greeks used it to strengthen memory function and scholars wore garlands of rosemary during examinations in order to improve their memory and concentration. It is widely used as a food spice and as an antioxidant to preserve foods. Rosemary: Main Actions ANTIOXIDANT Rosemary has strong antioxidant activity and is widely used to preserve food and cosmetics. Rosemary leaf extract has been shown to enhance superoxide dismutase activity and to have an effect stronger than vitamin E in scavenging oxygen radicals. It is suggested that carnosol and carnosic Read more […]