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Herbal polyphenols · in-depth review

Rosmarinic Acid

Rosmarinic Acid

Rosmarinic acid is a caffeic-acid ester in rosemary, perilla, and lemon balm. Trials focus on seasonal nasal discomfort and local antioxidant activity.

Also known asNo common aliases yet
Related diseasesAllergic rhinitis
Related symptomsNasal congestion

Marked asPrimarySupporting

Primary

Eases seasonal nasal discomfort

Rosmarinic acid can affect inflammatory mediators and allergy-related signals in the nasal mucosa, so congestion and itching in pollen season are often milder. For people who clog and run at the first seasonal wind, changes in easier breathing and how often they blow their nose are more often noticeable after several weeks of continued use.

Primary

Supports local antioxidant defense

This caffeic acid ester shows up more often in observations of oxidative burden on skin and mucosa; local redness, heat, and dry discomfort can be recorded together. For people whose skin reddens and tightens after sun or dryness, differences in evenness of tone and comfort are more often noticeable after several weeks of continued use.

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Nasal congestion

Rosmarinic acid can affect inflammatory mediators and allergy-related signals in the nasal mucosa, so congestion and itching in pollen season are often milder. People who congest and drip when seasons change and keep blowing their nose more often notice clearer airways and fewer sneezes after several continuous weeks.

Allergic rhinitis

Rosmarinic acid can affect inflammatory mediators and allergy-related signals in the nasal mucosa, so congestion and itching in pollen season are often milder. People who sneeze and drip in pollen season more often notice nasal patency and eye itch after several continuous weeks.

With foodTake with a meal (not on an empty stomach)
Best timeMorning or midday
SolubilityWater-soluble

After continued use, reassess by how you feel and whether you still need it.

General wellnessTypical daily intake for general wellness: rosmarinic acid often 100–300 mg
Specific needsNo official UL; typical adult supplement daily safety upper limit is about 500 mg, and do not exceed this on your own long term.

How oftenUsually fine to use daily; adjust to personal need.

Cautions

If you take medicines, are pregnant, or have a chronic condition, ask a clinician before use.

Interactions

  1. Anticoagulants (rosemary tradition; limited evidence)
Common side effects

· Some people may notice mild digestive or other discomfort.

Rare but important

· If discomfort persists or you worry about drug interactions, seek professional advice.

Long-term dependenceNo typical addiction evidence; do not exceed labeled amounts on your own long term.

Sources

These are institution pages you can check—not a certification of this ingredient.

Medical disclaimerThis page is compiled by the HerbBB editorial team for general health information only. It is not a substitute for advice from a doctor, pharmacist, or other qualified clinician. If you have a health condition, take medicines, or are pregnant or breastfeeding, speak with a professional first.