Hermetica Superfood Encyclopedia
The Short Answer
Rosmarinic acid is a polyphenolic compound found in herbs like rosemary and basil that exhibits antioxidant and anti-inflammatory properties. This phenolic acid works by scavenging free radicals and modulating inflammatory pathways, though human clinical evidence remains limited.
CategoryNamed Bioactive Compounds
GroupCompound
Evidence LevelModerate
Primary Keywordrosmarinic acid benefits
Synergy Pairings3
Rosmarinic Acid (Phenolic Acid) — botanical close-up
Health Benefits
Origin & History
Natural habitat
Rosmarinic acid is a polyphenolic compound classified as a phenolic acid, commonly found in plants of the Lamiaceae family including rosemary (Rosmarinus officinalis), lemon balm (Melissa officinalis), and peppermint (Mentha piperita). It is extracted from dried leaves using methods such as Soxhlet distillation, supercritical CO2 extraction, or efflux extraction, yielding high-purity compounds (98-99%) confirmed by NMR spectroscopy.
“The research dossier provides no information on traditional medicine systems, historical uses, or duration of use for rosmarinic acid. Traditional context is entirely absent from the available research.”Traditional Medicine
Scientific Research
The research dossier contains no clinical trials, RCTs, or meta-analyses for rosmarinic acid. No PubMed PMIDs, study designs, sample sizes, or clinical outcomes are available in the provided research.
Preparation & Dosage
Traditional preparation
No clinically studied dosage ranges are available in the research. No information on forms (extract, powder, standardized) or standardization details provided. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Rosmarinic acid is a phenolic acid ester compound (not a macronutrient or food in itself) with molecular formula C18H16O8 and molecular weight of 360.31 g/mol. It is a secondary plant metabolite found as a bioactive constituent in numerous herbs: rosemary (Rosmarinus officinalis) contains approximately 0.2–3.0% rosmarinic acid by dry weight; lemon balm (Melissa officinalis) contains 0.5–4.0% dry weight; basil (Ocimum basilicum) contains 0.05–1.0% dry weight; sage (Salvia officinalis) contains 0.1–3.5% dry weight; peppermint (Mentha piperita) contains approximately 0.5–2.0% dry weight. Structurally, it is an ester of caffeic acid and 3,4-dihydroxyphenyllactic acid, both of which are also phenolic acids. It contains no macronutrients, dietary fiber, vitamins, or minerals intrinsically. As a polyphenol, it exhibits strong antioxidant capacity, with a Trolox Equivalent Antioxidant Capacity (TEAC) reported at approximately 4.0–5.0 μmol Trolox/μmol compound in vitro. Oral bioavailability is relatively low and variable; studies indicate absorption rates of roughly 10–25% in humans, with peak plasma concentrations occurring 30–90 minutes post-ingestion. It undergoes extensive phase II metabolism (methylation, glucuronidation, sulfation) in intestinal epithelium and liver. Typical supplemental doses studied range from 50–500 mg/day; dietary intake from herb consumption is generally 5–50 mg per serving of herb-rich foods.
How It Works
Mechanism of Action
Rosmarinic acid functions as a potent antioxidant by donating hydrogen atoms to neutralize free radicals and chelating metal ions. It inhibits pro-inflammatory enzymes including cyclooxygenase (COX) and lipoxygenase, while suppressing nuclear factor-kappa B (NF-κB) activation. The compound also modulates complement cascade activation and reduces histamine release from mast cells.
Clinical Evidence
Current research on rosmarinic acid consists primarily of in vitro and animal studies, with limited human clinical trials available. Laboratory studies demonstrate antioxidant capacity and anti-inflammatory effects, while animal models suggest potential benefits for allergic responses and oxidative stress. The lack of robust randomized controlled trials in humans limits definitive conclusions about therapeutic efficacy. Existing evidence suggests promise but requires further clinical validation.
Safety & Interactions
Rosmarinic acid appears generally well-tolerated when consumed through food sources, with no significant adverse effects reported in available studies. Potential interactions with anticoagulant medications may occur due to possible blood-thinning effects, though this requires clinical verification. Safety data for supplemental doses during pregnancy and lactation is insufficient. Individuals with bleeding disorders should exercise caution when considering rosmarinic acid supplementation.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
(R)-α-{[(E)-3-(3,4-dihydroxyphenyl)-1-oxo-2-propenyl]oxy}-3,4-dihydroxybenzeneacetic acidRARosmarinateCaffeic acid esterα-O-caffeoyl-3,4-dihydroxyphenyllactic acidLabiatae acidMint phenolic acid
Frequently Asked Questions
What foods contain rosmarinic acid naturally?
Rosmarinic acid is abundant in culinary herbs including rosemary, basil, oregano, sage, and thyme. Perilla leaves and lemon balm also contain significant concentrations, with rosemary typically providing the highest levels at 1.5-2.5% dry weight.
How much rosmarinic acid should I take daily?
No established recommended dosage exists for rosmarinic acid supplements due to limited human clinical trials. Studies have used varying doses from 50-200mg daily, but optimal therapeutic dosing remains undetermined and requires further research.
Does rosmarinic acid help with allergies?
Animal studies suggest rosmarinic acid may reduce allergic responses by inhibiting histamine release and complement activation. However, human clinical trials are needed to confirm anti-allergic effects and establish effective dosing protocols.
Can rosmarinic acid interact with blood thinners?
Rosmarinic acid may theoretically enhance anticoagulant effects due to its influence on platelet function, though clinical interactions are not well-documented. Patients taking warfarin or other blood thinners should consult healthcare providers before supplementation.
Is rosmarinic acid the same as rosemary extract?
Rosmarinic acid is one active compound found in rosemary extract, but rosemary contains multiple bioactive compounds including carnosic acid and carnosol. Standardized rosmarinic acid supplements provide specific concentrations, while whole rosemary extracts offer broader phytochemical profiles.
What is the difference between rosmarinic acid and other phenolic acids found in herbs?
Rosmarinic acid is a phenolic compound unique to certain aromatic plants like rosemary, oregano, and sage, distinguished by its diphenolic ester structure. Unlike other phenolic acids such as caffeic or ferulic acid, rosmarinic acid is formed through the esterification of caffeic acid with 3,4-dihydroxyphenyllactic acid, giving it a distinct chemical profile. This structural difference may affect how it behaves in the body, though direct comparative studies in humans are limited.
Is rosmarinic acid safe during pregnancy and breastfeeding?
Current safety data on rosmarinic acid specifically during pregnancy and breastfeeding is insufficient, as human clinical trials have not been conducted in these populations. Pregnant and breastfeeding women should consult a healthcare provider before taking supplements containing rosmarinic acid, as general herbal supplement guidance recommends caution without established safety evidence. High-dose rosemary products have traditionally been avoided during pregnancy, though the specific implications for isolated rosmarinic acid remain unclear.
What affects the absorption and bioavailability of rosmarinic acid?
Rosmarinic acid absorption in the human body has not been thoroughly characterized in controlled clinical studies, limiting understanding of bioavailability factors. Preliminary research suggests it may undergo metabolic transformation by gut microbiota and hepatic enzymes, though the extent and efficiency of this process in humans remain unknown. Factors such as food matrix, individual microbiome composition, and supplement form (extract type, concentration) could theoretically influence absorption, but evidence-based data is currently unavailable.
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