Quick answer
Sage (Salvia officinalis) and clary sage (Salvia sclarea) have human research supporting fewer menopausal hot flashes, better memory and attention, improved cholesterol and triglycerides, relief from sore throats, and easier menstrual cramps when used in aromatherapy massage. Use sage as food, tea, or a standardized supplement. Diffuse or dilute the essential oil, but do not swallow common sage essential oil, because its thujone content can be neurotoxic.
Sage is one of those herbs that has quietly earned its reputation. People have used it medicinally for thousands of years to sharpen memory and support overall health, and it was part of the official medicinal pharmacopeia of Ancient Rome.
The name says it all. “Sage” literally means someone who has attained wisdom. The use of sage as a distilled essential oil dates back to the Middle Ages, when steam distillation was developed.
When I first wrote this post, most of the sage research was in cells and animals. That has changed. We now have meta-analyses on hot flashes and cholesterol, more trials on memory, and a much clearer picture of where the safety line sits with the essential oil. This update walks through all of it, and I’ll tell you how I actually think about sage when clients ask me about it.
In this guide
- Sage varieties: common sage vs. clary sage vs. Spanish sage
- Benefit 1: Memory and brain function
- Benefit 2: Menopausal hot flashes
- Benefit 3: Menstrual cramps
- Benefit 4: Stress, cortisol, and mood
- Benefit 5: Cholesterol and triglycerides
- Benefit 6: Blood sugar and insulin resistance
- Benefit 7: Sore throat and oral health
- Benefit 8: Men’s hormonal health
- Benefit 9: Cancer-protective compounds
- How strong is the evidence? (graphic)
- Other traditional uses
- How does sage work?
- How to use sage safely (thujone explained)
- Frequently asked questions
Sage Varieties: Common Sage vs. Clary Sage vs. Spanish Sage
Sage is beautiful to grow, wonderful to cook with, and useful both topically and internally. It belongs to the Salvia genus in the mint family, and it has that characteristic musky, earthy smell. There are over 900 species of Salvia, each with slightly different characteristics.
Most of the research focuses on three of them, and they are not interchangeable:
Here’s why this matters: if you read that “sage oil helps cramps,” that research is almost always on clary sage. If you read that “sage helps hot flashes,” that’s common sage leaf extract, not the essential oil. Mixing them up is the most common mistake I see.
Benefit 1: Sage Helps Memory and Brain Function
It is no surprise sage supports the brain. It is rich in neuroprotective plant phenols, camphor, and anti-inflammatory carnosic acid, all of which dampen inflammation and protect cells from oxidative damage.
What the human trials show
- Alzheimer’s disease: In a clinical trial of people with mild to moderate Alzheimer’s, sage extract improved cognition and reduced agitation compared with placebo over 4 months.
- Healthy young adults: A double-blind, placebo-controlled trial of sage essential oil capsules found faster memory and better secondary memory with sage, along with improved mood and calmness that the placebo group didn’t get.
- Healthy older adults (newer to this post): In a crossover trial of 20 volunteers over age 65, a 333 mg dose of standardized sage extract improved memory and attention at every testing time across the day, while the placebo condition showed the usual afternoon decline.
A 2023 review in Pharmaceuticals pulled the clinical sage-and-cognition studies together. Its honest conclusion: the results are encouraging, but most sage memory studies are small and rarely use standardized extracts, so longer, larger trials are still needed.
Why sage may protect the brain
- Supports acetylcholine levels
- Has strong antioxidant effects that protect brain cells
- Reduces the toxicity of amyloid beta proteins
- Calms inflammation
- Helps protect nerve growth factors like BDNF
In Alzheimer’s disease, levels of the neurotransmitter acetylcholine fall. Sage essential oil has been shown to inhibit acetylcholinesterase, the enzyme that breaks down acetylcholine. Interestingly, that’s the same mechanism used by several Alzheimer’s medications. In early research, sage also reduced amyloid beta toxicity in neurons, and in animal models it is neuroprotective against amyloid damage, partly by preserving BDNF.
Benefit 2: Sage Reduces Menopausal Hot Flashes
This is the benefit women ask me about most, and it’s where the research has grown the most since my original post.
The first trial that really put sage on the map gave women a once-daily fresh sage tablet for 8 weeks. Hot flashes dropped a little more each week, with the biggest reduction at week 8, and no significant side effects were reported. The breakdown by severity is striking:
That was an open-label study of 69 women, so there was no placebo group. Since then:
- A small randomized trial in postmenopausal women found that 100 mg of sage extract daily for 4 weeks eased hot flashes, night sweats, fatigue, panic, and concentration problems.
- A 2023 meta-analysis of four randomized trials concluded that sage reduced how often hot flashes happened, though its effect on severity was not significant.
My take: Sage is a reasonable first step for women who want a non-hormonal option for hot flashes and night sweats, especially those who sweat heavily. I tell clients to give it a full 8 weeks, since that’s when the benefit peaked in the research. It is not a substitute for addressing blood sugar, sleep, and stress, which drive hot flashes too. If hormonal shifts are part of your picture, my post on vitamins, minerals, and herbs that help balance hormones pairs well with this one.
Benefit 3: Clary Sage Eases Menstrual Cramps
Clary sage (Salvia sclarea) is the variety with the best evidence for period pain relief with aromatherapy.
In a randomized clinical trial, an essential oil blend of clary sage, calming lavender oil, and marjoram was massaged into the lower abdomen. Compared with placebo, it reduced both the intensity and the duration of menstrual pain.
Clary sage contains natural pain-relieving (analgesic) compounds, including linalyl acetate, linalool, eucalyptol, and beta-caryophyllene. Sage tea and cooking with sage are gentle additions too.
Cramps that are severe every month are worth looking into, not just covering up. I go much deeper on the root causes in my book Period Fix.
Related post: 8 Reasons Eating Broccoli Every Day Enhances Gut Health
Benefit 4: Sage Lowers Cortisol and Supports Mood
This one is close to my heart, since cortisol is what I wrote an entire book about.
In menopausal women, simply inhaling clary sage oil lowered cortisol levels and showed antidepressant-like effects compared with a control group. In the healthy-adult memory trial above, common sage capsules also improved calmness and mood.
Diffusing clary sage is a low-risk option to try if you’re dealing with mood changes and low serotonin. Many people also find sage tea calming in the evening.
Sage works best as one piece of a bigger plan. If stress is running your life, start with my guide to choosing between ashwagandha and rhodiola, and the full HPA-axis approach in Cortisol Fix.
Benefit 5: Sage Improves Cholesterol and Triglycerides
My original post leaned on a rat study showing sage lowered LDL and raised HDL. We now have human data, and it holds up.
- In a randomized, placebo-controlled trial of people with high cholesterol, 500 mg of sage leaf extract every 8 hours for 2 months lowered total cholesterol, triglycerides, LDL, and VLDL while raising HDL.
- A small pilot study found that drinking sage tea twice daily for 4 weeks lowered LDL and total cholesterol and raised HDL, with improvements in the body’s own antioxidant enzymes and no liver side effects.
- A meta-analysis of four clinical trials found that sage lowered triglycerides by about 75 mg/dL and raised HDL by about 6 mg/dL.
Sage’s antioxidants also reduce the oxidation of LDL. Oxidized LDL is what does the damage inside artery walls. I’ve long argued that inflammation and oxidation, not LDL alone, are the bigger drivers of heart disease, and sage works on exactly that piece.
Benefit 6: Sage May Help Blood Sugar and Insulin Resistance
Herbs often have an entourage effect, meaning their compounds work together for benefits beyond any single ingredient.
In animals, sage lowered glucose by calming inflammation and reduced insulin resistance, a hallmark of type 2 diabetes.
The human research is more mixed. In a double-blind trial of 80 people with type 2 diabetes, 150 mg of sage extract three times daily lowered 2-hour post-meal glucose and cholesterol, but did not change fasting glucose or HbA1c. The NIH’s integrative health center (NCCIH) says there isn’t yet enough evidence that sage meaningfully lowers blood sugar.
A practical note: Post-meal spikes are often where the real damage happens, so even a modest effect there is worth something. But if you take diabetes medication, check with your provider first, since sage could add to its glucose-lowering effect. And don’t overlook food triggers. I saw firsthand on my own CGM how much food sensitivities drive blood sugar swings.
Benefit 7: Sage Soothes Sore Throats and Supports Oral Health
This is a traditional use that now has solid clinical backing, and it was missing from my original post.
In a randomized, double-blind trial across 11 Swiss medical practices with 154 people, an echinacea and sage throat spray worked as well as a chlorhexidine and lidocaine spray for acute sore throat. After 3 days, 63.8% of the sage group had responded, compared with 57.8% in the medicated spray group, and both were well tolerated.
Sage also has antibacterial activity, which is why it’s been used for centuries as a gargle for sore gums and mouth sores. For more natural options during cold and flu season, see my roundup of natural antiviral foods, herbs, and nutrients.
Benefit 8: Sage May Support Men’s Hormonal Health
Sage isn’t only for women. Because it can lower cortisol and improve insulin sensitivity, it may indirectly support male hormones as well.
Many herbs help support healthy testosterone levels in men, and sage may be one of them. In male rats, sage improved testicular function and testosterone levels.
This is still animal data, so it’s a “maybe” until human trials confirm it.
Benefit 9: Sage Contains Cancer-Protective Compounds
Most culinary herbs are a smart addition to a cancer-protective diet, and sage is no exception.
Early research shows sage may reduce the growth of new blood vessels that feed tumors (angiogenesis). In lab studies, it increased cell death in colon cancer, melanoma, and kidney adenocarcinoma cells, and it also slowed the growth of breast, colon, and cervical cancer cells.
These are cell studies, not human trials. Think of sage as part of a plant-rich, anti-inflammatory diet rather than a cancer treatment.
How Strong Is the Evidence for Each Sage Benefit?
Not all sage benefits are equal. Here’s how I’d rate the human evidence as of 2026:
Other Traditional Uses of Sage
Sage has a long list of traditional uses that haven’t been fully tested in modern trials. People have used it for:
- Pain, painful periods, and stomach pain
- Cold sores and sore throats
- Loss of appetite, indigestion, and gas
- Bloating and sluggish digestion
- Diarrhea
- Dry mouth
- Asthma
- Excessive sweating (this one now has some support from the menopause trials)
Some people also use sage rinses and diluted oil on the scalp for thinning hair, and in skin care. If hair loss is your concern, it’s worth ruling out internal causes first, like low stomach acid and hair loss or low iron.
How Does Sage Work?
Sage benefits the body largely through its antioxidant compounds, which help quiet excessive inflammation.
It also contains compounds that may slow cancer cell growth, including caryophyllene, manool, and alpha-humulene.
Sage activates PPAR-gamma (peroxisome proliferator-activated receptor gamma), a master regulator of genes involved in cellular energy production and lipid and glucose metabolism. That activation improves the HDL-to-LDL ratio, lowers triglycerides, reduces insulin resistance, and may reduce fat tissue size. That lines up nicely with the human cholesterol trials above.
Finally, sage inhibits acetylcholinesterase (supporting memory) and has antibacterial activity (supporting the throat and mouth).
How to Use Sage Safely: Thujone Explained
This section got the biggest rewrite. Culinary sage is very safe, and so is sage tea in normal amounts. The concern is a compound called thujone, which is concentrated in common sage essential oil and can be neurotoxic in high doses.
Do not swallow common sage essential oil. The European Medicines Agency’s herbal committee concluded that the risks of taking sage essential oil internally outweigh its benefits because of its high thujone content. For sage leaf preparations, the agency limits thujone to 6 mg per day for up to 2 weeks of continuous medicinal use.
What is thujone?
Thujone is a natural compound in the essential oil of several plants. It comes in two forms, alpha-thujone and beta-thujone, and the alpha form is about 2 to 3 times more potent. Common sage is a rich source, along with wormwood (the herb behind absinthe’s reputation), tansy, and cedar leaf.
Here’s how much of each plant’s essential oil is thujone, according to the European Medicines Agency’s thujone safety review:
| Essential oil | Thujone content |
|---|---|
| Tansy | About 77% |
| Cedar leaf | About 65% |
| Common sage | About 43% to 55% |
| Wormwood | About 18% to 42% |
| Rosemary | About 4% |
| Thyme | Under 1% |
What thujone does in the body
Thujone blocks the brain’s GABA-A receptors. GABA is your main calming neurotransmitter, the brakes on the nervous system. When thujone blocks those receptors, nerve cells become overexcited.
That is why the main danger is seizures. In large amounts, thujone causes central nervous system disturbances: restlessness, dizziness, tremors, and vomiting. At high enough doses these progress to convulsions that resemble epilepsy, then loss of consciousness, and in rare extreme cases death. A case series on plant-induced seizures linked these cases to essential oils taken by mouth, not to cooking with herbs or drinking herbal tea.
The magnitude of risk: food vs. tea vs. oil
Put those numbers side by side and the picture is clear:
- Cooking with sage: negligible risk. A sprinkle of leaves in your stuffing or brown-butter sauce adds only trace amounts of thujone.
- Sage tea and standardized leaf extracts: low risk at normal doses. Thujone dissolves poorly in water, and the European limits were set with these preparations in mind. The main caution is using medicinal amounts every day for months without a break.
- Common sage essential oil taken internally: real risk. Sage oil is roughly half thujone, and a single drop weighs about 45 mg. That puts an estimated 19 to 25 mg of thujone in one drop, which is 3 to 4 times the European daily limit and above the dose that impaired attention in a controlled human study.
In animal research, rats showed no convulsions at 5 to 10 mg per kg of body weight daily over 14 weeks, and small seizures appeared in a 2-year study. That’s partly why regulators build in a wide safety margin for people. Children are at higher risk because the same amount is a much bigger dose relative to their body weight.
What about absinthe? Absinthe’s reputation for causing hallucinations and “madness” came from its wormwood thujone. Modern analyses suggest the problems absinthe drinkers had were driven mostly by its very high alcohol content, not thujone. The real-world thujone risk today comes from concentrated essential oils, not drinks or food.
The best ways to use sage
Who should avoid medicinal amounts of sage?
| Situation | Why |
|---|---|
| Pregnancy and breastfeeding | Safety hasn’t been established, and sage has traditionally been used to dry up breast milk. NCCIH advises talking to your provider first. |
| Seizure disorders | Thujone can lower the seizure threshold. |
| Diabetes medications | Sage may add to glucose-lowering effects. |
| Sedatives | Sage may have a mild sedating effect in some people. |
| Hormone-sensitive conditions | Clary sage aromatherapy is often discussed for its hormonal effects; check with your provider. |
A common supplement dose is around 300 to 1,000 mg daily of standardized leaf extract, though the studies used a wide range and the ideal dose hasn’t been settled. As with any herb, check with your practitioner before using sage medicinally. If you’d like professional-grade herbal products, you can order them through my Fullscript supplement dispensary.
For more essential oils with real research behind them, see my posts on peppermint essential oil uses and cilantro oil for detoxification, or browse all of my essential oil articles.
Frequently Asked Questions About Sage
Is it safe to ingest sage essential oil?
No. Common sage essential oil is high in thujone, which can be neurotoxic. The European Medicines Agency concluded the risks of taking sage oil internally outweigh the benefits. Use sage as food, tea, or a standardized leaf extract instead, and reserve the essential oil for diffusing or diluted topical use.
What is thujone and how dangerous is it?
Thujone is a natural compound in sage, wormwood, tansy, and cedar leaf oils. It blocks GABA-A receptors, the brain’s calming system, so large amounts can cause restlessness, vomiting, tremors, and seizures. Cooking with sage and drinking sage tea expose you to small amounts. The danger comes from swallowing common sage essential oil, where a single drop holds an estimated 19 to 25 mg of thujone, several times the 6 mg European daily limit.
What is the difference between sage and clary sage?
Common sage (Salvia officinalis) is the culinary herb studied for memory, hot flashes, cholesterol, and sore throat. Clary sage (Salvia sclarea) is mainly used in aromatherapy and has research for menstrual cramps and lowering cortisol. Clary sage oil is very low in thujone, while common sage oil is high in it.
Does sage help with hot flashes?
Yes, for many women. A 2023 meta-analysis of four randomized trials found sage reduced how often hot flashes occurred, though not their severity. In one 8-week study, severe hot flashes dropped by 79 percent and very severe hot flashes resolved completely. Benefits built over time and peaked around 8 weeks.
Can sage improve memory?
Small clinical trials suggest it can. Sage extract improved memory and attention in healthy older adults, sage oil improved memory speed in younger adults, and sage extract improved cognition in people with mild to moderate Alzheimer’s disease over 4 months. Sage appears to work by protecting acetylcholine, a key memory neurotransmitter.
How much sage tea is safe to drink?
One to two cups a day, made with about 1 to 2 grams of dried leaf per cup, is a reasonable amount for most adults. European guidance limits medicinal sage leaf preparations to about 2 weeks of continuous use because of thujone, so take breaks if you drink it daily for therapeutic purposes. Culinary amounts are not a concern.
Can sage lower blood sugar?
Possibly, but the evidence is mixed. In a trial of people with type 2 diabetes, sage extract lowered 2-hour post-meal glucose and cholesterol but not fasting glucose or HbA1c. If you take diabetes medication, talk with your provider before using sage, since it may add to the glucose-lowering effect.
Who should not take sage?
People who are pregnant or breastfeeding, people with seizure disorders, and anyone taking diabetes medications or sedatives should avoid medicinal amounts of sage unless their provider approves it. Cooking with sage is safe for nearly everyone.
The Bottom Line on Sage
Sage has moved from folk remedy to an herb with real clinical support, especially for hot flashes, memory, cholesterol, and sore throats. Clary sage brings its own benefits for cramps and stress. The key is using the right sage in the right form: cook with it, sip it, take a standardized extract, and keep the essential oil in the diffuser rather than in your mouth.
As always, test, don’t guess. If you’re working through hormonal symptoms, stress, or metabolic issues and want a plan built around your own body, learn about working with me one-on-one. #TheHealthyRD
Key references
- Akhondzadeh S, et al. Salvia officinalis extract in mild to moderate Alzheimer’s disease. J Clin Pharm Ther. 2003.
- Tildesley NT, et al. Positive modulation of mood and cognitive performance following sage oil. Physiol Behav. 2005.
- Scholey AB, et al. Sage extract improves memory and attention in healthy older volunteers. Psychopharmacology. 2008.
- Ertas A, et al. Cognitive improvement by the genus Salvia: from ethnopharmacology to clinical evidence. Pharmaceuticals. 2023.
- Bommer S, et al. First time proof of sage’s tolerability and efficacy in menopausal women with hot flushes. Adv Ther. 2011.
- Dadfar F, Bamdad K. Effect of Salvia officinalis extract on menopausal symptoms. Int J Reprod Biomed. 2019.
- Moradi M, et al. Salvia officinalis on hot flashes: systematic review and meta-analysis. Int J Community Based Nurs Midwifery. 2023.
- Ou MC, et al. Aromatherapy massage for primary dysmenorrhea. J Obstet Gynaecol Res. 2012.
- Lee KB, et al. Clary sage oil inhalation and cortisol in climacteric women. Phytother Res. 2014.
- Ghorbani A, Esmaeilizadeh M. Pharmacological properties of Salvia officinalis and its components. J Tradit Complement Med. 2017.
- Sá CM, et al. Sage tea drinking improves lipid profile and antioxidant defences in humans. Int J Mol Sci. 2009.
- Effectiveness of Salvia officinalis on serum lipids: systematic review and meta-analysis. Curr Dev Nutr. 2019.
- Behradmanesh S, et al. Effect of Salvia officinalis on diabetic patients. J Renal Inj Prev. 2013.
- Schapowal A, et al. Echinacea/sage or chlorhexidine/lidocaine for acute sore throats. Eur J Med Res. 2009.
- European Medicines Agency HMPC. Assessment report on Salvia officinalis folium and aetheroleum. 2016.
- NCCIH. Sage fact sheet.
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