Rosemary (Salvia rosmarinus)
Another culinary herb with cognitive bona fides. Just smelling rosemary essential oil measurably improves memory. Oral extracts add antioxidant and anti-inflammatory effects.
Moderate for acute cognitive performance via aromatherapy, antioxidant effects, modest BP and anti-anxiety. Effects: minutes (aromatherapy) to weeks (oral).
Rosemary contains rosmarinic acid, carnosic acid, and 1,8-cineole — compounds with antioxidant, anti-inflammatory, and acetylcholinesterase-inhibiting activity. Notable: aromatherapy with rosemary essential oil produces measurable improvements in memory and alertness in trials (Moss, Oswald). Oral rosemary extract has evidence for general antioxidant support, modest BP improvement, and anti-anxiety effects.
- Form
- Rosemary leaf extract capsules, rosemary essential oil (aromatherapy diffuser or inhaler — not for oral use undiluted).
- Dose
- Extract: 250–750 mg/day. Tea: 2–4 g leaves daily.
- Timing
- AM for cognition (acute aromatherapy effect within minutes).
- Schedule
- Daily.
- Side effects
- Generally very well-tolerated at culinary / supplement doses. Large medicinal doses of essential oil orally can cause seizures.
- Interactions
- Anticoagulants — mild additive. Diabetes meds — mild glucose lowering. ACE inhibitors — possible additive BP effect.
- Contraindications
- Pregnancy (high medicinal doses — uterine stimulant). Seizure disorders (essential oil specifically). Bleeding disorders.
- Lab markers
- Not standard.
- Food sources
- Fresh or dried rosemary in cooking — roasted potatoes, lamb, focaccia. Tea is a gentle daily option.
Pairs with
Sage, bacopa, ginkgo (cognitive stack). Carnosine (rosemary's carnosic acid is in the same family).
within Herbs & botanicals