# Carotol

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/carotol
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-28
**Evidence Score:** 2 / 10
**Category:** Compound
**Also Known As:** Carrot seed alcohol, Daucus carota sesquiterpene, Wild carrot sesquiterpenoid, Carrot seed sesquiterpene alcohol, Carotol sesquiterpene, Daucol

## Overview

Carotol is a bicyclic sesquiterpenoid alcohol found predominantly in carrot seed essential oil (Daucus carota) that exhibits selective cytotoxic activity against cancer cell lines. Its primary mechanism involves disruption of cancer cell proliferation, with demonstrated activity against colon and lung carcinoma cells at micromolar concentrations in preclinical models.

## Health Benefits

• Exhibits cytotoxic effects against HCT-116 colon carcinoma cells with an IC₅₀ of 25.68 µM (preclinical evidence).[1][2] • Shows cytotoxic activity against A-549 lung carcinoma cells with an IC₅₀ of 28.65 µM (preclinical evidence).[1][2] • Demonstrates lower toxicity to normal MRC-5 lung fibroblasts compared to standard chemotherapeutics (preclinical evidence).[1][2] • Acts as an antifungal agent with 65% radial growth inhibition (preclinical evidence).[1][2][7][8] • Provides [antioxidant](/ingredients/condition/antioxidant) effects, with a FRAP value of 164 µmol FeSO₄/g and DPPH IC₅₀ of 2.1 mg/ml (preclinical evidence).[3]

## Mechanism of Action

Carotol exerts cytotoxic effects by inducing apoptosis in cancer cell lines, likely through [mitochondrial](/ingredients/condition/energy) pathway disruption and inhibition of cell cycle progression. Studies suggest it may interfere with topoisomerase activity and modulate [reactive oxygen species](/ingredients/condition/antioxidant) (ROS) production within tumor cells, selectively targeting malignant over normal fibroblast cells such as MRC-5. Its bicyclic sesquiterpene scaffold is thought to interact with lipid membranes and intracellular signaling proteins involved in proliferation pathways.

## Clinical Summary

Current evidence for carotol is entirely preclinical, derived from in vitro cell culture studies rather than human clinical trials. Against HCT-116 colon carcinoma cells, carotol demonstrated an IC₅₀ of 25.68 µM, and against A-549 lung carcinoma cells an IC₅₀ of 28.65 µM, indicating moderate cytotoxic potency. Importantly, carotol showed comparatively lower toxicity toward normal MRC-5 lung fibroblast cells, suggesting a degree of tumor selectivity. No human pharmacokinetic, dosing, or efficacy data currently exist, and translating these in vitro findings to clinical use requires substantial further research.

## Nutritional Profile

Carotol is a sesquiterpene alcohol (chemical formula C₁₅H₂₆O, molecular weight ~222.37 g/mol) and is not a nutrient or food item; it is a bioactive compound predominantly found in carrot (Daucus carota) seed essential oil, where it can constitute approximately 30–70% of the oil composition depending on cultivar and extraction method. As a single terpenoid compound, it does not possess a conventional nutritional profile (i.e., no macronutrients, fiber, vitamins, or minerals). Key physicochemical and bioactive characteristics include: • Classification: Bicyclic sesquiterpene alcohol belonging to the guaianol structural class. • Natural sources and approximate concentrations: Carrot seed essential oil (~30–70% of total oil), with trace amounts in carrot root tissue and other Daucus species. • Bioactive properties: Cytotoxic (IC₅₀ ~25.68 µM against HCT-116; ~28.65 µM against A-549), antifungal, and potential [antioxidant activity](/ingredients/condition/antioxidant). • Bioavailability: As a lipophilic terpenoid (logP estimated ~3.5–4.0), carotol is expected to have reasonable absorption through lipid-mediated pathways when administered orally; however, specific human pharmacokinetic data (Cmax, Tmax, half-life, oral bioavailability percentage) are not well-established in published literature. First-pass hepatic [metabolism](/ingredients/condition/weight-management) likely involves cytochrome P450-mediated oxidation. • Caloric contribution: Negligible at pharmacologically relevant doses. • No protein, carbohydrate, fat, vitamin, or mineral content as it is a purified single chemical entity. • Typical exposure through dietary carrot consumption is minimal, as carotol is concentrated in seed oil rather than the edible root.

## Dosage & Preparation

No clinically studied dosage ranges are available for carotol in human trials; existing data is preclinical only. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

No human safety trials have been conducted specifically for isolated carotol, making definitive side effect and interaction profiles unavailable. As a concentrated sesquiterpenoid from carrot seed essential oil, high-dose supplementation could theoretically cause skin sensitization or allergic reactions in individuals sensitive to Apiaceae family plants. Carotol should be avoided during pregnancy, as carrot seed oil has historically been associated with uterotonic properties and potential embryotoxic effects. Potential interactions with cytochrome P450-metabolized drugs, anticoagulants, or chemotherapeutic agents cannot be ruled out and warrant caution.

## Scientific Research

No human clinical trials or meta-analyses were identified specifically for carotol. Research is limited to preclinical in vitro studies. An RCT exists for carrot seed in women with hypoactive sexual desire disorder, but not for isolated carotol.[10]

## Historical & Cultural Context

Carrot, from which carotol is derived, is used in traditional Lebanese and global folk medicine, particularly for hepatic insufficiency treatment. Carrot seed essential oil has been traditionally utilized for its antifungal, repellent, and wound-healing properties.

## Synergistic Combinations

Carrot seed oil, beta-carotene, vitamin E, curcumin, ginger

## Frequently Asked Questions

### What is carotol and where does it come from?

Carotol is a bicyclic sesquiterpenoid alcohol and the primary active constituent of carrot seed essential oil extracted from Daucus carota seeds, typically comprising 30–40% of the oil's composition. It belongs to the carotane-type sesquiterpene class and is structurally distinct from beta-carotene, which is a carotenoid found in carrot root. Carotol is isolated via steam distillation of dried carrot seeds and is studied primarily for its bioactive pharmacological properties.

### Does carotol have anti-cancer properties?

Preclinical in vitro evidence shows carotol inhibits the growth of HCT-116 colon carcinoma cells with an IC₅₀ of 25.68 µM and A-549 lung carcinoma cells with an IC₅₀ of 28.65 µM, indicating meaningful cytotoxic potency. Notably, it demonstrated lower toxicity against normal MRC-5 lung fibroblast cells, suggesting selective activity toward malignant cells. However, no human clinical trials have been conducted, so anti-cancer claims in humans remain entirely unsupported by current evidence.

### Is carotol safe to take as a supplement?

There is currently insufficient human safety data to establish a safe supplemental dose for isolated carotol. As a component of carrot seed essential oil, it may cause allergic reactions in people sensitive to the Apiaceae (carrot/parsley) plant family, and undiluted essential oil application can cause skin irritation. Pregnancy use is contraindicated due to the historical association of carrot seed oil with uterotonic effects and potential harm to the developing fetus.

### How does carotol differ from beta-carotene?

Carotol and beta-carotene are chemically unrelated compounds despite both originating from carrot plants. Beta-carotene is a carotenoid pigment found in the carrot root that serves as a provitamin A precursor, while carotol is a sesquiterpenoid alcohol concentrated in carrot seeds with a bicyclic carbon skeleton. Their mechanisms of action, tissue distribution, and biological effects are entirely distinct, and carotol does not contribute to vitamin A synthesis.

### What is the IC50 of carotol against cancer cells?

In published in vitro studies, carotol demonstrated an IC₅₀ of 25.68 µM against HCT-116 human colon carcinoma cells and 28.65 µM against A-549 human lung carcinoma cells, reflecting moderate cytotoxic potency at micromolar concentrations. These values were measured using standard cell viability assays such as MTT or similar colorimetric methods in controlled laboratory conditions. For context, IC₅₀ values below 30 µM are generally considered pharmacologically significant in early-stage cancer research, though in vitro results frequently do not predict in vivo or clinical outcomes.

### What does the research show about carotol's effectiveness against different cancer cell types?

Preclinical studies demonstrate that carotol exhibits cytotoxic activity against multiple cancer cell lines, with an IC₅₀ of 25.68 µM against HCT-116 colon carcinoma cells and 28.65 µM against A-549 lung carcinoma cells. Notably, carotol shows lower toxicity to normal MRC-5 lung fibroblasts compared to standard chemotherapeutic agents, suggesting a potential selectivity for cancer cells over healthy tissue. However, these are early-stage in vitro findings, and human clinical trials are needed to establish clinical efficacy and safety.

### Does carotol have any antifungal benefits beyond its potential anti-cancer properties?

Yes, carotol demonstrates antifungal activity in addition to its cytotoxic effects against cancer cells. This dual bioactivity makes carotol of interest for multiple therapeutic applications, though most research to date has focused on its anti-cancer potential. Additional studies are needed to characterize the extent and mechanisms of its antifungal effects and their practical clinical relevance.

### Who might benefit most from carotol supplementation based on current research?

Based on preclinical evidence, individuals interested in exploring compounds with potential anti-cancer and antifungal properties may be candidates for carotol supplementation, though clinical data in humans remains limited. People with specific cancer types or fungal concerns should consult with healthcare providers before use, as current evidence is primarily from laboratory studies rather than human trials. At present, carotol should be considered an investigational compound rather than an established therapeutic agent.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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