Hermetica Superfood Encyclopedia
The Short Answer
Toothache Plant (Acmella oleracea) contains spilanthol, an N-alkylamide that provides analgesic effects by inhibiting inducible nitric oxide synthase (iNOS) and suppressing inflammatory cytokines IL-1β, IL-6, and TNF-α. The compound demonstrates potent anesthetic properties through NF-κB pathway inhibition and cyclooxygenase-2 suppression.
CategoryFlower
GroupFlower
Evidence LevelModerate
Primary KeywordToothache Plant side effects
Synergy Pairings4

Toothache Plant — botanical close-up
Health Benefits
**Alleviates oral pain**
and discomfort through its potent analgesic and anesthetic compounds, such as spilanthol.
**Enhances immune resilience**
via its antimicrobial and antiviral activities, protecting against various infections.
**Reduces systemic inflammation,**
offering support for joint pain and inflammatory conditions.
**Supports digestive health**
by promoting salivation and aiding in gut detoxification.
**Stimulates collagen production**
and promotes wound healing, contributing to skin vitality.
**Modulates stress response**
and supports cognitive clarity through its adaptogenic effects.
**Soothes respiratory discomfort**
by clearing sinus congestion and alleviating sore throats.
Origin & History

Natural habitat
Toothache Plant (Acmella oleracea) is a flowering herb native to tropical and subtropical regions of Brazil, Africa, and India. It thrives in warm, humid environments and is recognized for its distinctive numbing sensation. This botanical is valued in traditional medicine for its potent analgesic and antimicrobial properties.
“Toothache Plant has been a cornerstone of Amazonian, African, and Ayurvedic traditional medicine for centuries. Indigenous Amazonian tribes used it for oral pain relief, while Ayurvedic practitioners valued its anti-inflammatory and digestive properties. This botanical is revered for its unique numbing sensation and broad medicinal applications.”Traditional Medicine
Scientific Research
Research indicates that Toothache Plant contains spilanthol, a compound with documented analgesic, anti-inflammatory, and antimicrobial properties, primarily explored in in vitro and animal studies. These studies support its traditional uses for oral health and immune support. Further human clinical trials are warranted to confirm efficacy and safety in broader applications.
Preparation & Dosage

Traditional preparation
Common forms
Fresh flowers (chewed), dried leaves (tea), powdered extract (supplements), topical applications (oral care, skincare).
Traditional use
Chew 1-2 fresh flowers for immediate oral relief.
Tea preparation
Brew 1-2 teaspoons of dried leaves in hot water.
Recommended dosage
500-1000 mg of powdered extract daily for systemic benefits
Topical application
Use formulations with 1-2% spilanthol concentration.
Nutritional Profile
- Dietary Fiber
- Vitamin C
- Calcium
- Magnesium
- Potassium
- Spilanthol (analgesic, antimicrobial, anti-inflammatory)
- Alkylamides (immune-modulating, adaptogenic)
- Flavonoids (Luteolin, Apigenin)
- Tannins
How It Works
Mechanism of Action
Spilanthol, the primary N-alkylamide compound, inhibits inducible nitric oxide synthase (iNOS) expression and prevents NF-κB nuclear localization, effectively suppressing proinflammatory cytokines including IL-1β, IL-6, and TNF-α. The compound reduces myeloperoxidase activity in neutrophilic inflammation and dose-dependently blocks nitric oxide production in macrophages by decreasing cyclooxygenase-2 mRNA and protein expression. Additional bioactive compounds include flavonoids that inhibit prostaglandin synthesis and various terpenes contributing to antimicrobial activity.
Clinical Evidence
Current evidence is limited to in vitro and animal studies, with no published human clinical trials providing quantified therapeutic outcomes. Laboratory studies demonstrate that hexane and chloroform extracts suppress nitric oxide production in stimulated macrophages by 72-85% at 80 mcg/mL concentrations. Isolated spilanthol reduced nitric oxide by 60% at 90 μM and 20% at 360 μM in controlled experiments. While traditional use and preclinical data support oral pain relief applications, human clinical trials are essential to establish safety profiles and therapeutic efficacy.
Safety & Interactions
Animal embryo studies indicate potential teratogenic activity from spilanthol metabolites, warranting caution during pregnancy. Spilanthol significantly inhibits cytochrome P450 enzyme CYP2E1 in vitro, potentially affecting metabolism of anesthetics like isoflurane and sevoflurane, though clinical relevance remains unknown. High-dose animal studies suggest possible interference with antiandrogen medications (bicalutamide, flutamide, abiraterone) by elevating testosterone, FSH, and LH levels in male subjects. No major contraindications are established, but pregnant women and patients taking interacting medications should exercise caution.
Synergy Stack
Hermetica Formulation Heuristic
Polyphenol/antioxidant base
Immune & Inflammation
Also Known As
Acmella oleraceaSpilanthes acmellajambupara cressbuzz buttons
Frequently Asked Questions
How much spilanthol is needed for pain relief effects?
Laboratory studies show spilanthol reduces inflammatory markers by 60% at 90 μM concentrations, but human dosage recommendations require clinical trials. Traditional preparations typically use fresh flower extracts, though standardized dosing remains unestablished.
What makes toothache plant effective for oral pain?
The N-alkylamide compound spilanthol provides anesthetic effects by stimulating salivation and blocking pain signals through nitric oxide pathway inhibition. This mechanism directly targets inflammatory processes in oral tissues while providing numbing sensation.
Are there any serious drug interactions with toothache plant?
Spilanthol inhibits CYP2E1 enzyme activity, potentially affecting anesthetic medications like isoflurane and sevoflurane. Animal studies suggest possible interference with antiandrogen drugs by altering hormone levels, though clinical significance requires further research.
Can pregnant women safely use toothache plant?
Animal studies indicate potential teratogenic effects from spilanthol metabolites, suggesting caution during pregnancy. Without human safety data, pregnant women should avoid toothache plant preparations until clinical studies establish safety profiles.
How long do the numbing effects of toothache plant last?
While traditional use reports temporary oral numbness lasting 15-30 minutes, controlled studies measuring duration of spilanthol's anesthetic effects are lacking. The compound's bioavailability and elimination kinetics in humans remain unstudied in clinical settings.
What is the most effective form of toothache plant for oral pain relief?
Fresh or dried flower extracts and tinctures are considered most potent for immediate numbing effects due to higher spilanthol concentration compared to powdered forms. Many users report faster pain relief from liquid extracts applied directly to the affected area, though standardized extracts ensure consistent spilanthol levels across batches. Dried flowers can be made into a paste or tea for both topical and internal benefits.
Who should avoid toothache plant supplementation?
Children under 5 years old should avoid toothache plant due to limited safety data, and individuals with severe allergies to plants in the Asteraceae family should exercise caution. People with undiagnosed oral pain should consult a dentist before use, as toothache plant masks symptoms rather than treating underlying dental issues. Those taking immunosuppressant medications should consult a healthcare provider, as toothache plant's immune-stimulating properties may interfere with treatment.
What does research show about toothache plant's anti-inflammatory benefits beyond oral pain?
Clinical studies indicate that spilanthol possesses systemic anti-inflammatory properties that may help reduce joint pain and support conditions involving chronic inflammation. Research suggests these effects work through multiple mechanisms, including reducing inflammatory cytokine production, though most robust evidence remains focused on topical oral applications. While promising for inflammation-related conditions, more human clinical trials are needed to establish optimal dosing and efficacy for systemic inflammatory support.

Explore the Full Encyclopedia
7,400+ ingredients researched, verified, and formulated for optimal synergy.
Browse IngredientsThese statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.
hermetica-encyclopedia-canary-zzqv9k4w toothache-plant curated by Hermetica Superfoods at ingredients.hermeticasuperfoods.com and licensed CC BY-NC-SA 4.0 (non-commercial share-alike, attribution required)