Sage (Salvia officinalis): Flavor, Thujone, Uses and What the Evidence Says

Sage is the herb behind the flavor of a lot of sausages and stuffings, and it’s just one of 1,041 accepted species of Salvia, rosemary now among them. Common sage, Salvia officinalis, is a gray-leaved subshrub from southern Europe, strong, bitter and camphor-scented. Its essential oil is led by thujones, compounds the European Medicines Agency limits in herbal medicines,¹ but that’s mostly about concentrated products, not cooking.

At a glance

Measured values

10 figures, sourced

Measure	Value	Scope	Source
Essential oil	up to 2.5 % of dried leaf	Dried leaves, depending on origin, growing conditions and harvest (PROSEA)	uses.plantnet-project.org
α-Thujone	22.8 % of essential oil	One Spanish sage oil, as reported by PROSEA	uses.plantnet-project.org
β-Thujone	4.3 % of essential oil	One Spanish sage oil, as reported by PROSEA	uses.plantnet-project.org
1,8-Cineole	15.7 % of essential oil	One Spanish sage oil, as reported by PROSEA	uses.plantnet-project.org
Camphor	5.0 % of essential oil	One Spanish sage oil, as reported by PROSEA	uses.plantnet-project.org
α-Thujone	23.0 % of essential oil	One Italian sage oil, as reported by PROSEA	uses.plantnet-project.org
β-Thujone	26.9 % of essential oil	One Italian sage oil, as reported by PROSEA	uses.plantnet-project.org
1,8-Cineole	11.8 % of essential oil	One Italian sage oil, as reported by PROSEA	uses.plantnet-project.org
Stems (adulterant), maximum Limit	10 %	Traded dried sage, per PROSEA	uses.plantnet-project.org
Pyrrolizidine alkaloids, maximum Limit	400 µg/kg	EU Regulation 2023/915, dried herbs (covers dried sage, not among the named exceptions)	eur-lex.europa.eu

Each figure is quoted as its source states it, with the samples or standard it applies to. Where sources differ, both are shown; nothing is averaged. All measured values

What sage is

Common sage is a perennial subshrub, upright or sprawling, 40–70 cm tall. Its leaves are opposite and oblong to elliptical, and its flowers, borne in tiers along the stem, are violet-blue, pink or white.

One sage among a thousand

Salvia is a huge genus. Kew’s Plants of the World Online counts 1,041 accepted species.⁴ That total now includes rosemary, which Kew accepts as Salvia rosmarinus. Only a few sages are culinary herbs. The FDA’s list of spices generally recognized as safe includes common sage and has a separate entry for Greek sage.⁵ Its list of GRAS essential oils adds Spanish sage, Salvia lavandulaefolia.⁶ Common sage and Spanish sage are two different species, both Mediterranean shrubs. For a sweet, fruity relative grown mostly in gardens, see pineapple sage.

Flavor and aroma

Sage tastes savory, bitter and astringent, with a strong camphor and pine-resin smell. PROSEA credits that strong signature smell to the thujones.³

The compounds

Dried sage leaves yield up to 2.5% essential oil, depending on where and how the plant was grown and when it was harvested. The main components are α-thujone, β-thujone, 1,8-cineole and camphor, but the balance shifts from source to source:³

These are two oils from two places, not a range for all sage. Don’t average them or apply them to a jar of dried leaf.

Fresh vs. dried

The University of Delaware’s extension guide notes that dried herbs are stronger than fresh, and equates 3/4 to 1 teaspoon of crumbled dried herb with 2 to 3 teaspoons of fresh.⁷ That’s a general herb rule. See fresh sage vs. dried sage.

Origin and production

The references disagree on where sage is native. Kew says southwestern Germany to southern Europe, listing Albania, France, Germany, Greece, Italy, the northwestern Balkans, Spain and Switzerland.² PROSEA places it in the Adriatic belt of the Balkan peninsula: Greece, Albania and the former Yugoslavia.³ NCCIH describes common sage as native to the Mediterranean region and the Middle East.⁸ Kew is the botanical authority, but the three don’t draw the same map. Sage has since been introduced far more widely. Kew’s introduced range includes many US states, Ontario, Québec and Korea.

PROSEA names the Balkan region along the Adriatic Sea as the major producing and exporting area, and the United States as the biggest user, at about 4,000 tonnes a year. Those figures date from the late 1980s, when western European imports ran at about 1,750 tonnes a year.³ We found no current statistical source for world sage production. A popular claim that Croatia, Albania and Montenegro supply more than half the world’s sage couldn’t be traced.

How sage is used

Dried sage is a spice for sausages, stuffings, soups and canned vegetables, and fresh leaves go into herb butters, cheeses, salads and vinegars. In American kitchens, sage is best known as a poultry herb:

• Poultry seasoning. McCormick’s culinary poultry seasoning lists thyme first, then sage, marjoram, rosemary, black pepper and nutmeg. US labels list ingredients in descending order by weight, so that blend has more thyme than sage.⁹ See poultry seasoning.
• Sausage and stuffing. These are sage’s classic jobs, in line with the list above.
• Pork, poultry, butter sauces and squash. Sage stands up to fat and long roasting, and whole leaves crisp up nicely when fried briefly in butter or oil.

Technique and amounts

America’s Test Kitchen counts sage as a “hearty” herb that goes in early.¹⁰ The University of Delaware’s guide puts sage among the strong herbs and warns that the flavor can be “extremely objectionable” if you use too much.⁷ Start small. If a dish has gone over, see too much sage. More ideas: sage uses and cooking with sage.

Pairings

Beyond the blend above, sage’s usual partners are thyme, rosemary, marjoram, garlic, black pepper and onion. Comparisons: rosemary vs. sage and sage vs. lavender.

Buying and quality

PROSEA flags two common problems in traded sage. Stems are the most frequent adulterant and shouldn’t exceed 10%, and leaves often get mixed with other Salvia species, especially S. fruticosa.³ Sage oil has been adulterated with cheaper thujone. Good dried sage is gray-green, soft and strongly scented when you rub it. “Rubbed” sage is lightly crumbled leaf, fluffier than ground sage.

Storage

We found no published shelf-life figure for fresh or dried sage from a regulator or standards body. Trust your nose. For methods, see how to store sage and how to dry sage.

Health claims and safety

What the evidence says

NCCIH says only small amounts of research have been done on sage for health conditions.⁸ On that limited evidence:

• Memory and thinking. Sage may improve scores on memory or other cognitive tests in healthy people. Whether it affects cognition in people with Alzheimer’s disease is uncertain.⁸
• Hot flashes. A few small studies suggest common sage might cut down how often menopausal hot flashes happen.⁸
• Blood lipids and glucose. A few studies suggest effects on blood lipids. There isn’t enough evidence on blood glucose.⁸

These are findings about sage extracts and preparations in studies, not about seasoning food. We make no claim that sage treats or prevents any condition.

Thujone

Thujone is the safety issue with sage, and it’s mostly about concentrated products, not cooking.

• NCCIH says sage is likely safe in food amounts, but common sage contains thujone, which can be toxic in large amounts, so high doses or long-term use may be unsafe. It also says sage may be unsafe during pregnancy because of thujone.⁸
• The European Medicines Agency notes that thujone shows up in sage, thyme, rosemary, wormwood and other plants in highly variable amounts, and estimates that average diets already supply 0.3 to 1 mg a day.¹
• For herbal medicines, the EMA proposed 6 mg as a limit of daily exposure, and 5 mg per person a day for sage leaf preparations taken for no more than two weeks.¹ It advises avoiding or minimizing thujone for groups like pregnant women and children.
• The most prominent sign of acute thujone poisoning is epileptiform convulsions. The EMA concluded that the benefits of sage essential oil don’t outweigh its risks.¹

None of these documents measure the thujone in a teaspoon of culinary sage, and we found no source that does. The clear practical line runs between the leaf, which NCCIH considers likely safe in food amounts, and sage essential oil, which the EMA advises against.

Food status and contaminants

The FDA lists sage as a spice generally recognized as safe, and sage oil as a GRAS essential oil.⁵⁶ EU law caps pyrrolizidine alkaloids in dried herbs at 400 µg/kg. That limit covers dried sage, since it isn’t one of the named exceptions.¹¹

Substitutes

Marjoram, thyme and poultry seasoning can cover parts of sage’s role, though none of them matches its camphor note. See sage substitutes.

Footnotes

1. Public statement on herbal medicinal products containing thujone, European Medicines Agency, 2012. ema.europa.eu · Regulator ↩ ↩² ↩³ ↩⁴

2. Salvia officinalis L., Plants of the World Online, Royal Botanic Gardens, Kew. powo.science.kew.org · Reference work ↩ ↩²

3. U.A. Dasuki, Salvia officinalis, Plant Resources of South-East Asia (PROSEA). uses.plantnet-project.org · Reference work ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹

4. Salvia L., Plants of the World Online, Royal Botanic Gardens, Kew. powo.science.kew.org · Reference work ↩

5. 21 CFR 182.10, US Food and Drug Administration. ecfr.gov · Regulator ↩ ↩²

6. 21 CFR 182.20, US Food and Drug Administration. ecfr.gov · Regulator ↩ ↩²

7. “Using Herbs and Spices”, University of Delaware Cooperative Extension, 2025. udel.edu · Reference work ↩ ↩²

8. “Sage”, National Center for Complementary and Integrative Health, 2025. nccih.nih.gov · Regulator ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶

9. 21 CFR 101.4, US Food and Drug Administration. ecfr.gov · Regulator ↩

10. Liz Bomze, “Our Guide to Fresh Herbs”, America’s Test Kitchen, 2019. americastestkitchen.com · Publication ↩

11. Commission Regulation (EU) 2023/915, Annex I, section 2.4. eur-lex.europa.eu · Regulator ↩

Also drawn on

• Salvia rosmarinus Spenn., Plants of the World Online, Royal Botanic Gardens, Kew. powo.science.kew.org
• Poultry Seasoning, 12 oz (McCormick Culinary), McCormick & Company. mccormick.com