# Cinchona (Cinchona officinalis)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/cinchona
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 8 / 10
**Category:** South American
**Also Known As:** Cinchona officinalis, Peruvian bark, Jesuit's bark, Quinine bark, Fever tree, Red cinchona, Cascarilla, China bark

## Overview

Cinchona officinalis is a South American tree bark containing quinine alkaloids that block sodium channels and interfere with plasmodium parasites. The bark demonstrates antimalarial properties and potential [antioxidant activity](/ingredients/condition/antioxidant) through its quinoline alkaloid content.

## Health Benefits

• Antimalarial effects through quinine content (traditional use, lacks modern clinical evidence) • Potential [antioxidant activity](/ingredients/condition/antioxidant) (preclinical evidence only, DPPH IC50 <50 μg/mL) • May reduce heart palpitations through quinine's sodium channel effects (limited evidence) • Traditional use for [muscle relaxation](/ingredients/condition/sleep) (no clinical evidence available) • Historical use for fever reduction as febrifuge (traditional evidence only)

## Mechanism of Action

Cinchona's primary bioactive compounds are quinine alkaloids that block voltage-gated sodium channels in cardiac and skeletal muscle. Quinine interferes with plasmodium parasite DNA replication and disrupts their food vacuole function. The bark's phenolic compounds contribute antioxidant activity through [free radical scaveng](/ingredients/condition/antioxidant)ing mechanisms.

## Clinical Summary

Modern clinical evidence for cinchona is extremely limited, with most antimalarial research focusing on isolated quinine rather than whole bark extracts. Preclinical studies show [antioxidant activity](/ingredients/condition/antioxidant) with DPPH IC50 values below 50 μg/mL in laboratory assays. Traditional use studies lack placebo controls and standardized dosing protocols. No recent randomized controlled trials have evaluated cinchona bark supplements for any health condition.

## Nutritional Profile

Cinchona bark (Cinchona officinalis) is not consumed as a conventional food source; its profile is dominated by bioactive alkaloids rather than macronutrients. Alkaloid content: Total alkaloids 3–15% dry weight of bark, with quinine comprising 3–7% dry weight (approximately 30–70 mg/g dried bark), quinidine 0.5–1.5% dry weight, cinchonine 0.5–1.0% dry weight, and cinchonidine 0.3–0.8% dry weight. Quinine bioavailability via oral ingestion is approximately 76–88% absorbed in the gastrointestinal tract, with peak plasma concentration reached in 1–3 hours. Polyphenolic compounds: Quinovic acid glycosides present at approximately 1–3% dry weight; tannins (primarily condensed tannins/proanthocyanidins) at 2–4% dry weight, contributing to the noted [antioxidant activity](/ingredients/condition/antioxidant) (DPPH IC50 <50 μg/mL). Carbohydrates: Bark contains structural polysaccharides (cellulose, hemicellulose) comprising approximately 40–50% dry weight, but these are not bioavailable for nutrition. Quinovin (a bitter glycoside) present at trace levels (~0.5% dry weight). Minerals: Limited data; bark material contains trace calcium (~200–400 mg/100g dry weight estimated), potassium (~150–300 mg/100g), and magnesium (~50–100 mg/100g), though these are not nutritionally relevant at typical medicinal doses. Protein: Negligible (<2% dry weight). Fat: Negligible (<1% dry weight). Fiber: Not nutritionally applicable given non-food use. Volatile oils: Present at <0.5% dry weight. Note: Cinchona is used medicinally in very small doses (bark extracts, tinctures, tonic water trace amounts ~83 mg quinine/liter); it is not a dietary staple, and macronutrient data is largely irrelevant to its application.

## Dosage & Preparation

No clinically studied dosage ranges for Cinchona officinalis extracts, powders, or standardized forms are available as human trials are not specified. Bark contains total alkaloids at 6-15% with quinine at 5-16% in some varieties, but standardization is not linked to clinical dosing. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Cinchona can cause cinchonism (tinnitus, headache, nausea) at doses above 2-4 grams daily due to quinine content. It may interact with warfarin, increasing bleeding risk, and can potentiate digoxin toxicity. Contraindicated in pregnancy due to potential uterine stimulation and in individuals with G6PD deficiency. May cause dangerous arrhythmias in people with heart conditions.

## Scientific Research

The research dossier indicates a lack of specific human clinical trials, RCTs, or meta-analyses for Cinchona officinalis itself, with no PubMed PMIDs provided. Current evidence is primarily preclinical or historical, with modern uses for conditions like cancer, muscle cramps, or varicose veins lacking good scientific evidence from human trials.

## Historical & Cultural Context

Cinchona bark has been used for centuries in Peruvian and South American traditional medicine, primarily as an antimalarial febrifuge, and was adopted by Jesuits in the colonial period. Introduced to Europe in the 17th century as 'Peruvian bark' for treating malaria, it remains a flavor component in beverages today.

## Synergistic Combinations

Artemisia annua, Cat's claw, Andrographis, Willow bark, Feverfew

## Frequently Asked Questions

### What are the main cinchona benefits supported by evidence?

Cinchona's most established benefit is its antimalarial activity, attributed to quinine alkaloids that interfere with plasmodium parasite DNA replication and disrupt food vacuole function. Preclinical studies also suggest antioxidant activity from phenolic compounds, with DPPH radical scavenging IC50 values below 50 μg/mL. Traditional uses include fever reduction, muscle relaxation, and reducing heart palpitations via sodium channel blockade. However, these traditional applications lack modern human clinical trial support, so cinchona bark supplements should not be considered a proven therapeutic option for any of these conditions.

### Does cinchona bark help with leg cramps or muscle spasms?

Cinchona bark has a historical reputation for relieving muscle cramps, likely due to quinine's ability to block voltage-gated sodium channels in skeletal muscle, which may reduce abnormal muscle excitability. However, there are no current human clinical trials specifically evaluating cinchona bark supplements for muscle cramps. While pharmaceutical quinine has been studied for nocturnal leg cramps, that evidence does not directly transfer to unregulated bark supplements with variable alkaloid content. Consult a healthcare provider before using cinchona for this purpose.

### Is cinchona bark safe to take during pregnancy?

Cinchona bark is generally considered unsafe during pregnancy and should be avoided. Its quinine alkaloid content has been associated with uterine stimulation and potential teratogenic effects at higher doses. Pharmaceutical quinine is used in pregnancy only in life-threatening malaria under strict medical supervision. Unregulated cinchona supplements carry unpredictable alkaloid levels ranging from 6–15% total alkaloids, making dose control impossible. Pregnant individuals should not use cinchona supplements and should consult an obstetrician for any health concerns.

### Can cinchona bark cause side effects like ringing in the ears?

Yes. Cinchonism is a well-documented syndrome associated with quinine-containing products, including cinchona bark, and tinnitus (ringing in the ears) is one of its hallmark symptoms. Other side effects of cinchonism include headache, nausea, dizziness, visual disturbances, and hearing impairment. These effects are dose-dependent and linked to quinine's systemic activity. Because cinchona bark supplements are not standardized, the risk of inadvertently consuming high quinine doses is real. Discontinue use and seek medical attention if auditory or visual symptoms develop.

### Does cinchona interact with blood thinners like warfarin?

Cinchona bark may interact with anticoagulants such as warfarin. Quinine alkaloids can potentiate the anticoagulant effect of warfarin by interfering with clotting factor synthesis or metabolism, potentially increasing bleeding risk. This interaction has been observed with pharmaceutical quinine preparations. While direct human trial data for cinchona bark supplements and warfarin is lacking, the shared active compound creates a plausible interaction risk. Anyone taking blood thinners, antiplatelet drugs, or anticoagulants should consult their healthcare provider before using cinchona-containing products.

### What is cinchona bark used for in modern supplements?

In modern supplement formulations, cinchona bark is most often marketed for digestive support as a bitter tonic, cardiovascular wellness, and antioxidant benefits. Some products target muscle comfort or circulation. However, it is important to note that these modern applications lack robust human clinical trial evidence. Cinchona's bioactive quinoline alkaloids have well-characterised mechanisms, including sodium channel modulation and free radical scavenging, but translating preclinical findings into proven supplement benefits requires clinical validation that is currently absent for cinchona officinalis extracts.

### Can cinchona bark affect heart rhythm or be dangerous for people with arrhythmia?

Cinchona bark poses a meaningful concern for individuals with arrhythmias or underlying heart conditions. Quinine alkaloids block voltage-gated sodium channels in cardiac muscle, an antiarrhythmic-like mechanism that can also be proarrhythmic at elevated or variable doses. Pharmaceutical quinine is known to occasionally cause QT interval prolongation, which increases the risk of serious arrhythmias such as torsades de pointes. Because cinchona supplements are not standardised, alkaloid doses are unpredictable. People with any cardiac condition or those on antiarrhythmic medications should avoid cinchona supplements without explicit medical guidance.

### Is cinchona bark the same as tonic water, and can drinking tonic water replace a cinchona supplement?

Cinchona bark is the original botanical source of quinine used historically in tonic water. However, modern commercial tonic water contains only trace amounts of quinine, typically 83 mg per litre in the US and less in many other regions, far below any traditional therapeutic dose. Cinchona bark supplements may contain substantially higher and less predictable alkaloid levels. Tonic water cannot replace a cinchona supplement and should not be considered medicinal. Neither tonic water nor cinchona supplements are clinically validated replacements for pharmaceutical quinine or any other regulated treatment.

### How much quinine is in cinchona bark?

Cinchona bark typically contains 2-8% total alkaloids, with quinine comprising 60-95% of the alkaloid content. This translates to approximately 1.2-7.6% quinine by weight in quality bark extracts.

### Can cinchona bark treat malaria like quinine pills?

While cinchona contains quinine, bark preparations are not standardized for antimalarial treatment and should never replace prescription antimalarial medications. The quinine concentration is too variable and low for reliable malaria treatment.

### What is the safe dosage for cinchona bark supplements?

Traditional preparations use 1-3 grams of dried bark daily, but standardized dosing guidelines don't exist for supplements. Doses above 4 grams daily risk cinchonism toxicity from accumulated quinine alkaloids.

### Does cinchona interact with heart medications?

Yes, cinchona can dangerously interact with cardiac glycosides like digoxin, potentially causing arrhythmias. It may also affect warfarin metabolism and should be avoided by people taking anticoagulants or antiarrhythmic drugs.

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