Nootropic profile
Rosemary
Rosemary (Rosmarinus officinalis) is an aromatic herb with a long history of use as a cognitive enhancer, dating back to ancient Greece where students wore rosemary wreaths during exams. Modern research supports its benefits for memory, focus, and alertness through both oral supplementation and aromatherapy.
Best for
Educational only: this is not medical advice. Always check with a qualified healthcare professional before starting any supplement.
What is Rosemary?
Rosemary (Rosmarinus officinalis, recently reclassified as Salvia rosmarinus) is an evergreen shrub native to the Mediterranean region.
What it does for you
Community and editorial ratings, out of 5:
How to take it
- Dried herb/tea: 2-4 g steeped in hot water for 10 minutes, 1-3 times daily
- Standardised extract: 500-1000 mg per day of rosemary extract (standardised to rosmarinic acid or carnosic acid)
- Essential oil (aromatherapy): 3-5 drops in a diffuser for 30-60 minutes during cognitive work. Do not ingest essential oil.
- Dried powder capsules: 750-1500 mg per day
- Timing: Take or inhale before or during cognitively demanding tasks for best results
Watch out for
- Side effects: Very well tolerated at culinary and standard supplement doses. High doses of concentrated extract may cause GI discomfort or allergic...
- Essential oil caution: Rosemary essential oil should NEVER be ingested. It is for external/aromatic use only. Keep away from eyes and mucous membranes.
- Seizure disorders: Very high doses of rosemary (particularly camphor-rich varieties) may lower seizure threshold. Those with epilepsy should use caution.
- Blood thinning: Rosemary may have mild anticoagulant effects at high doses. Those on blood thinners should consult a doctor.
- Pregnancy: Safe in culinary amounts. Avoid high-dose supplements and essential oil use during pregnancy as rosemary may have uterotonic effects.
The science, if you're curious.
- Rosemary compounds (particularly 1,8-cineole and rosmarinic acid) inhibit acetylcholinesterase (AChE), the enzyme that breaks down acetylcholine, leading to...
- Carnosic acid and carnosol are potent antioxidants that activate the Nrf2 pathway, upregulating the body's own antioxidant defence systems and protecting...
- Rosmarinic acid inhibits NF-kB and reduces pro-inflammatory cytokines, countering neuroinflammation associated with cognitive decline.
- Some compounds in rosemary may promote vasodilation and improve blood flow to the brain, enhancing oxygen and nutrient delivery.
Where to find it
- Fresh rosemary herb: Widely available and easy to grow at home. Use in cooking or brew into tea.
- Dried rosemary: Available as loose herb for tea, or in capsule/powder form
- Standardised extracts: Capsules standardised to rosmarinic acid (typically 3-6%) or carnosic acid content
- Essential oil: For aromatherapy/diffuser use only. Look for 100% pure rosemary (Rosmarinus officinalis) essential oil.
- Rosemary-infused olive oil: A culinary way to incorporate rosemary's benefits into daily diet
Frequently asked
Rosemary (Rosmarinus officinalis) is an aromatic herb with a long history of use as a cognitive enhancer, dating back to ancient Greece where students wore rosemary wreaths during exams. Modern research supports its benefits for memory, focus, and alertness through both oral supplementation and aromatherapy.
The main benefits people report from Rosemary are: Cognitive Enhancement, Focus, Longevity, Memory, Mood, Stress Relief.
Dried herb/tea: 2-4 g steeped in hot water for 10 minutes, 1-3 times dailyStandardised extract: 500-1000 mg per day of rosemary extract (standardised to rosmarinic acid or carnosic acid)Essential oil (aromatherapy): 3-5 drops in a diffuser for 30-60 minutes during cognitive work. Do not ingest essen...
Side effects: Very well tolerated at culinary and standard supplement doses. High doses of concentrated extract may cause GI discomfort or allergic...Essential oil caution: Rosemary essential oil should NEVER be ingested. It is for external/aromatic use only. Keep away from eyes and mucous membranes...
Rosemary compounds (particularly 1,8-cineole and rosmarinic acid) inhibit acetylcholinesterase (AChE), the enzyme that breaks down acetylcholine, leading to...Carnosic acid and carnosol are potent antioxidants that activate the Nrf2 pathway, upregulating the body's own antioxidant defence syste...
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