All Essential Benefits/Effects/Facts & Information
Salvia Sclarea (Clary Sage) is a herb in the mint family traditionally used as a relaxing agent and aromatic, with a fair bit of literature suggesting it is used for for menopausal women.
There is a lack of large-scale studies to support the usage of Clary Sage as an aromatic, but the evidence that exists currently is supportive. One study in rodents (in which the rodents were essentially hot boxed with Clary Sage) noted anti-depressive effects after a single exposure and one study in female humans has noted a reduction in systolic blood pressure and respiratory rate 60 minutes after inhalation (study was placebo controlled and blinded, as to omit the possibility of the placebo effect).
Two studies exist using combination therapy of Clary Sage, Lavender, and another herb (one study used Rose Essential Oil, the other Marjoram) which have confirmed that this herbal aromatic therapy appears to be more effective than placebo in relieving menstrual pain in persons who self-report that they have more menstrual pain than average (on a scale of 1-10, participants had to rate a 5 or higher to be included in the study).
There are some immunological interactions with may be important to anti-cancer effects, but currently these studies are investigating the activity of the bioactive known as (-)-Sclareol which is unlikely to be located in the aroma. The anti-cancer effects, although interesting, are currently preliminary and not associated with aromatherapy.
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How to Take
Recommended dosage, active amounts, other details
If using Clary Sage for aromatherapy, enough should be lit (if using incense) to confer a pleasant aroma. The two studies using combination therapy noted that a cream containing 1 concentration drop of Clary Sage to 2 drops of Lavender in 5cc of volume was rubbed on the abdomen (the scent would remain on the body for a while).
Due to the exact bioactives not being known, quantifying the right dose for aromatherapy is difficult.
There is insufficient evidence to suggest an optimal oral dose of Clary Sage for any purpose.
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Salvia sclarea (of the family Lamiaceae; the Mint family), more commonly referred to as Clary Sage, is an aromatic herb. It is used highly in the perfume industry as the main bioactive, (-)-Sclareol, can be synthesized into Ambrox (an aromatic found from naturally in Ambergris, but is rare from its natural source).
It is sometimes drunk as a tea in Turkey, where it is known as misk sage tea.
Clary sage also has usage as an insect repellant.
The labdane type diterpene (-)-Sclareol, at 0.002-0.026% essential oil but can be up to 1.5% with solid/liquid extraction. The isomer 13-episclareol also exists, with both being biosynthesized from geranylgeranyl diphosphate. Sclareol oxide has also been detected
Manool and 13-epimanool (as well as the latter's oxide), structurally similar to Sclareol
Salviatrienes A and B at 4.5% and 1% of the folded essential oil
α-eudesmol, δ-cadinene, and δ-amorphene (aromatics)
The seeds of Clary sage have a 17.66+/-0.11% protein content and 27.24+/-1.32% essential oil content with 5.23+/-0.04% ash content. The fatty acid composition is mostly α-linoleic acid (C18:3 n3) at 52.1+/-0.04% of fatty acids and oleic acid (C18:1 n9) at 22.05+/-0.01%.
The antioxidant potential of Clary Sage in vitro is thought to exert neuroprotective effects, although it underperformed relative to other species of Salvia in protecting neuronal cells from DNA damage.
The essential oil of Clary Sage, following either intraperitoneal injection (0.05-0.2mL essential oil per kg bodyweight) or inhalation (1mL essential oil in warm water to release the aroma) to rats, showed anti-depressant actions in a Forced Swim Test model with a potency greater than that of Anthemis nobilis (Chamomile), Rosmarinus officinalis (Rosemary), and Lavandula angustifolia (Lavender) and comparable to the active controls of Imipramine (30mg/kg) and fluoxetine (1.8mg/kg); this anti-depressant effect was blocked with dopamine antagonists and buspirone, a serotonin receptor (5-HT1A) antagonist. When serum corticosteroids were measured (to assess the stress response), there was no significant effect of Clary Sage.
Appears to have anti-depressant effects in rats, and this has been noted with the aroma of Clary Sage
In 61 college-aged females with higher than average menstrual pain (6-10 on a VAS rating scale), an abdominal massage with 2 drops of Lavandula officinalis (Lavender) to one drop Clary Sage and one drop Rosa centifolia (Rose Essential Oil) was compared to placebo aromatherapy (almond oil, same method of appplication and volume of 5cc) and control (no aromatherapy). It was noted that aromatherapy was associated with an average reduction in pain from 7 (0-10 rating scale) down to 5 and then 3 on days 1 and 2, respectively; control failed to reduce pain, and placebo aromatherapy appears to work in some persons to a lesser extent than combination therapy (herb intervention still significantly greater than the placebo group). The authors noted that although heavier flows appears to be correlated with greater pain, that there were no significant difference between groups. A similar application method with a similar aromatherapy (Rose switched for Origanum majorana; Marjoram) noted that in persons with diagnosed primary dysmenorrhea given aromatherapy (placebo given synthestic scents; different molecules) that the herbal aromatherapy group experienced significantly greater pain relief associated with menstrual symptoms.
The latter study noted that the majority or aromatics were five molecules; linalyl acetate (36.84%), linalool (22.53%), eucalyptol (17.21%), β-caryophyllene (2.69%), and α‐terpineol (3.29%). It is thought that these aromatics are likely to mediated the anaglesic effects noted.
Combination therapy with at least Clary Sage and Lavender appears to be effective in reducing menstrual pain (no indiciation if this extends to pain in general or just menstrual pain), but currently no studies use Clary Sage in isolation and thus its efficacy in isolation cannot be determined
3.1. Blood Pressure
One study using Salvia Sclarea essential oil vapors (aromatherapy) in females with urinary incontinence undergoing urodynamic assessment noted that inhalation of Salvia Sclarea for 60 minutes was associated with a drop in systolic blood pressure relative to plcebo (almond oil), a drop in diastolic relative to Lavender scent but not placebo, and a decrease in respiratory rate relative to placebo. The drop in diastolic, which was not statistically significant relative to placebo, was because Lavender trended to increase blood pressure slightly.
At least one study to support Clary Sage reducing blood pressure via aromatherapy
4Interactions with Cancer Metabolism
4.1. Immunological Interactions
CD4+CD25+ T-cells are produced in the thymus or in the periphery via conversion from other T-cells and express Foxp3+ to positively influence development and function. CD4+CD25+ may accumulate at the site of tumors where they suppress the activity of cytotoxic T-cells
In mice bearing breast tumors who were then given an injection of isolated Sclareol (7.85mcg daily) directly into the tumor noted that the tumor did not grow in volume, while control experienced a standard growth rate; this was associated with an increase in IFN-γ with a concomitant decrease in IL-4 and reduced levels of the CD4+CD25+Foxp3+ Treg (T regulatory) immune cell. The suppression of CD4+CD25+Foxp3+ Treg cell concentration is thought to preserve T-cell mediated cytotoxicity towards tumor cells, and was as effective as the active control of Cyclophosphamide.
May have mechanisms to preserve T-cell cytotoxicity towards tumor cells via reducing the levels of a suppressive T-cell
HCT116 tumor-bearing mice appear to have reduced tumor size in response to injections of Sclareol (following liposomal incorporation, 1100mg/kg over 5 days with 50% dosing decrements), and suppression of HCT116 tumors has been noted elsewhere in immunodeficient mice.
Sclareol has been noted to induce apoptosis in B and T lymphocytic tumor cells with an IC50 below 20µg/mL via apoptotic means. This general cytotoxcity appears to extend to most cancer cell lines testes, and one study using CCRF-CEM leukemic cells as well as normal immune cells (resting and PMA activated PMBCs) noted that free sclareol did not show any therapeutic index (GI50 between 33.1-35µM) while liposomal sclaerol had a GI50 of less than 15µM on leukemic cells and over 100µM on normal cells.