Know2eat

Dried rosemary

Salvia rosmarinus

What dried rosemary has been studied for

2 associations assessed — none with dependable human evidence behind them yet. Strongest first.

  • 2 Insufficient
3 things to know first — allergies, interactions and intake limits

About dried rosemary

Rosemary needles dried whole or crushed. Rosemary is one of the herbs that survives drying well, because much of its character sits in relatively stable diterpenes rather than fragile top notes. The USDA entry is per 100 g of dried leaf, while a teaspoon is around a gram.

Also known as dried rosemary, rosemary leaves dried, romero

Brain & Cognitive HealthAntioxidant & Oxidative Stress

The evidence in depth

Best supported: Insufficient

What each association actually rests on, and the papers behind it. A rating describes the state of the research, not how impressive the food is. How we rate evidence.

Cognitive function

Brain & Cognitive Health
Insufficient evidence

Rosemary is strongly associated with memory in folklore, and small studies of rosemary aroma or extract report changes on cognitive tests. The studies are tiny, hard to blind because the smell is obvious, and inconsistent with one another, which is not a basis for a rating.

Insufficient evidence. Not enough human research to say anything useful yet.

4 sources

Deep research mode adds each paper’s own conclusion and stated limitations.

Oxidative stress markers

Antioxidant & Oxidative Stress
Insufficient evidence

Carnosic acid is a genuinely powerful antioxidant in the chemical sense, which is why the extract is used to keep fats from going rancid. Whether eating dried rosemary changes human oxidative stress markers has not been tested.

Insufficient evidence. Not enough human research to say anything useful yet.

3 sources

Deep research mode adds each paper’s own conclusion and stated limitations.

Ask about Dried rosemary

Ask about Dried rosemary

Answers are written only from the entries on this page — the same nutrients, compounds, claims and citations you can read above. Nothing is added from outside the database, and every answer lists what it was built from.

AI explanations are not switched on for this site, so there is nothing to ask here. Everything above is read straight from the database and does not need them.

Key nutrients

Nutrient content per 100 grams
NutrientAmount% DV
Macronutrients
Calories331 kcal17%
Protein4.88 g10%
Total fat15.2 g20%
Carbohydrate64.1 g23%
Fibre42.6 g152%
Water9.31 g—
Fats
Saturated fat7.37 g37%
Monounsaturated fat3.01 g—
Polyunsaturated fat2.34 g—
Cholesterol0 mg0%
EPA (omega-3)0 g—
DHA (omega-3)0 g—
DPA (omega-3)0 g—
Linoleic acid (omega-6)1.16 g—
Vitamins
Vitamin A156 µg17%
Vitamin C61.2 mg68%
Vitamin D0 µg0%
Thiamin (B1)0.514 mg43%
Riboflavin (B2)0.428 mg33%
Niacin (B3)1 mg6%
Vitamin B61.74 mg102%
Folate307 µg77%
Vitamin B120 µg0%
Minerals
Calcium1280 mg98%
Iron29.3 mg163%
Magnesium220 mg52%
Phosphorus70 mg6%
Potassium955 mg20%
Sodium50 mg2%
Zinc3.23 mg29%
Copper0.55 mg61%
Manganese1.87 mg81%
Selenium4.6 µg8%
Other measured compounds
Ash6.53 g—

Nutrient values are per 100 g of the USDA reference entry named on this page and vary with variety, growing conditions, storage and preparation.

Source record: Spices, rosemary, dried (USDA FoodData Central, FDC ID 171333).

% DV uses the FDA Daily Values for adults and children aged 4 and over. A dash means no Daily Value has been established for that nutrient.

Bioactive compounds

Compounds present in meaningful amounts. Presence is banded rather than quantified, because whole-food levels vary enormously with variety, growing conditions, storage and preparation.

How preparation changes things

Only effects with real support are listed. If a preparation method is missing, it is because nothing dependable is documented — not because it makes no difference.

  • groundIncreases compound release

    Whole dried rosemary needles are woody enough to be unpleasant to eat and release their oils slowly. Crushing or grinding them, or infusing them and straining, is how the flavour is normally extracted.

Things to know

Allergies, interactions and intake concerns. Every food gets this section — a reference where everything is uniformly good is not a reference.

  • Too much

    Rosemary essential oil and seizure risk

    Camphor-rich rosemary oil is convulsant at high doses and is conventionally avoided by people with epilepsy. Swallowing rosemary oil has caused poisoning; the dried herb in cooking has not.

  • Worth knowing

    Medicinal doses are avoided in pregnancy

    Concentrated rosemary preparations have traditional emmenagogue use and no pregnancy safety data. Seasoning food is not the concern; rosemary supplements and strong infusions taken daily are.

  • Worth knowing

    Rosemary extract as an additive is a different thing

    Purified rosemary extract is authorised as a food antioxidant across Europe and appears on labels as such. That is a standardised carnosic acid preparation used to slow fat oxidation, not evidence about eating the herb.