Hermetica Superfood Encyclopedia
The Short Answer
Cinchona officinalis is a South American tree bark containing quinine and quinidine alkaloids that exhibit antimalarial, antiviral, and anticancer properties. The bark's quinoline compounds interfere with pathogen replication and cellular proliferation through DNA intercalation and enzyme inhibition.
CategoryHerbs (Global Traditional)
GroupAmazonian
Evidence LevelStrong
Primary Keywordcinchona officinalis benefits
Synergy Pairings3
Cinchona officinalis — botanical close-up
Health Benefits
Origin & History
Natural habitat
Cinchona officinalis is a tree native to the Andean regions of South America, particularly Peru and Ecuador, belonging to the Rubiaceae family. The stem bark (known as Peruvian bark or quina-quina) is harvested and processed through percolation or maceration with solvents to extract quinoline alkaloids including quinine, quinidine, cinchonine, and cinchonidine.
“Cinchona officinalis bark has been used for centuries in South American indigenous medicine, particularly by the Quechua people who called it 'quinas,' to treat fevers including malaria. Introduced to Europe in the 17th century, it became a cornerstone for antimalarial therapy in global traditional medicine systems through bark decoctions.”Traditional Medicine
Scientific Research
Current research on Cinchona officinalis is limited to preclinical studies with no human clinical trials, RCTs, or meta-analyses identified. Key studies include in vitro antiviral effects against SARS-CoV-2 (PMID: 37673083) and anticancer activity in MCF-7 cells using nanoparticle formulations (PMID: 36234520/PMC9565860).
Preparation & Dosage
Traditional preparation
No clinically studied dosage ranges for Cinchona officinalis have been established in human trials. Preclinical studies used variable concentrations: 200 µg/mL for antifungal effects, 9 µg/mL IC50 for anticancer nanoparticles, and homeopathic dilutions for antiviral activity. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Cinchona officinalis bark is not consumed as a conventional food source and thus lacks a traditional macronutrient profile; its significance lies in its bioactive alkaloid content. Primary alkaloids: quinine (0.3–0.5% dry bark weight), quinidine (0.2–0.4%), cinchonine (0.2–0.5%), and cinchonidine (0.1–0.3%), with total alkaloid content ranging 1.5–7% depending on bark age, geographic origin, and extraction method. Secondary bioactives include quinovic acid glycosides (triterpene saponins), cinchotannic acid (a hydrolyzable tannin, approximately 2–4% dry weight), and quinine red (a degradation product of cinchotannic acid). Flavonoids including quercetin and kaempferol derivatives are present in modest amounts. Mineral content is poorly characterized for this species specifically; bark tannins may reduce bioavailability of divalent cations (iron, zinc) if consumed. Dietary fiber (cellulose and hemicellulose) constitutes the structural matrix of dried bark but is nutritionally incidental. Protein and fat content are negligible in medicinal bark preparations. Bioavailability notes: Quinine is well absorbed orally (bioavailability ~76–88% in humans), undergoes hepatic CYP3A4/CYP2C19 metabolism, with plasma half-life of 8–21 hours; quinidine similarly absorbed but with notable cardiac conduction effects at therapeutic doses. Tannin content may complex with alkaloids and reduce net absorption in whole-bark preparations compared to isolated alkaloid extracts.
How It Works
Mechanism of Action
Cinchona's primary alkaloids, quinine and quinidine, intercalate with DNA and inhibit topoisomerase enzymes, disrupting cellular replication in pathogens and cancer cells. Quinine specifically interferes with heme polymerization in malaria parasites, causing toxic heme accumulation. The quinoline compounds also modulate ion channels and exhibit anti-inflammatory effects through cyclooxygenase inhibition.
Clinical Evidence
Clinical evidence is strongest for quinine's antimalarial activity, with decades of proven efficacy against Plasmodium species. Recent in vitro studies show promising antiviral effects, with homeopathic preparations demonstrating 89% SARS-CoV-2 inhibition in cell cultures. Anticancer research remains preliminary, limited to laboratory studies showing 91% viability inhibition in MCF-7 breast cancer cells at 9 µg/mL IC50. Human clinical trials for antiviral and anticancer applications are lacking.
Safety & Interactions
Cinchona bark can cause cinchonism at high doses, characterized by tinnitus, headache, nausea, and visual disturbances. Quinine interacts with warfarin, digoxin, and other cardiac medications, potentially causing dangerous arrhythmias. Contraindicated during pregnancy due to uterotonic effects and potential teratogenicity. Individuals with G6PD deficiency should avoid quinine-containing preparations due to hemolysis risk.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
Cinchona officinalisPeruvian barkQuina-quinaJesuit's barkFever barkRed cinchonaQuinine barkCascarilla
Frequently Asked Questions
What is the active compound in cinchona bark?
The primary active compounds are quinine (6-11%) and quinidine alkaloids, which provide the bark's therapeutic antimalarial and potential antiviral effects. These quinoline alkaloids have been used medicinally for over 400 years.
How effective is cinchona against malaria?
Quinine from cinchona bark remains highly effective against chloroquine-resistant Plasmodium falciparum malaria, with cure rates exceeding 95% when properly dosed. It's considered a first-line treatment for severe malaria by WHO guidelines.
Can cinchona bark help with viral infections?
Recent laboratory studies show promising antiviral activity, with 89% inhibition of SARS-CoV-2 in cell cultures. However, this evidence comes only from preliminary in vitro studies, and human clinical trials are needed to confirm antiviral efficacy.
What are the side effects of cinchona supplements?
Common side effects include nausea, headache, tinnitus, and dizziness, collectively known as cinchonism. Higher doses can cause serious cardiac arrhythmias, hypoglycemia, and hemolysis in G6PD-deficient individuals.
Is cinchona safe during pregnancy?
Cinchona bark is contraindicated during pregnancy due to quinine's uterotonic properties and potential to cause birth defects. Pregnant women should only use quinine-containing medications under strict medical supervision for severe malaria treatment.
Does cinchona bark interact with common medications like antimalarials or blood thinners?
Cinchona alkaloids, particularly quinine, can interact with medications metabolized by CYP3A4 and CYP2D6 enzymes, potentially increasing levels of drugs like warfarin, digoxin, and certain antimalarials such as mefloquine. Concurrent use with other cinchona-containing products or prescription antimalarials should be avoided due to risk of cinchonism (toxicity). Consult a healthcare provider before combining cinchona supplements with chronic medications, especially those used for heart rhythm or blood clotting.
What is the most bioavailable form of cinchona—dried bark, extract, or tincture?
Standardized bark extracts and tinctures typically offer higher bioavailability and more consistent alkaloid content compared to raw dried bark, though research directly comparing forms in humans is limited. Alcohol-based tinctures may enhance absorption of the lipophilic alkaloids (quinine and cinchonidine), while aqueous decoctions show lower extraction efficiency. For optimal bioavailability, products standardized to total alkaloid content (usually 6–8%) are preferable to unstandardized bark powders.
What does current research show about cinchona's anticancer and antiviral potential?
Recent in vitro studies demonstrate promising activity—a homeopathic cinchona preparation inhibited SARS-CoV-2 replication by 89% in cell culture, and cinchona extracts showed 91% viability inhibition in breast cancer cells (MCF-7 line). However, these findings are preliminary laboratory evidence only and do not yet translate to proven clinical efficacy in humans. Further clinical trials are needed before cinchona can be recommended as a cancer or antiviral treatment.
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