Chopchini

Smilax china
Chopchini (Smilax china) is a perennial climbing shrub from East Asia, traditionally valued in Ayurvedic and Chinese medicine. Its rhizomes are supposedly beneficial for inflammatory conditions and detoxification, and it's also claimed to support skin health. This adaptogenic herb is prevalent across Asia for its diverse traditional uses.
PLANT FAMILY
Smilacaceae (Greenbrier)
PARTS USED
Root, Rhizome
AYURVEDIC ACTION
Vata ↓, Pitta ↓, Kapha ↑
ACTIVE COMPOUNDS
Saponins, Smilagenin

What is Chopchini?

Chopchini, scientifically known as Smilax china, is a perennial climbing shrub belonging to the Smilacaceae family. Native to East Asia, it thrives in varied environments, from forests to mountainous regions. This plant is recognized by its thorny stems, heart-shaped leaves, and small, reddish-brown berries. Its rhizomes, the subterranean stems, are particularly valued.

Historically, Chopchini has been a staple in traditional medicine systems across Asia, notably in Chinese and Ayurvedic practices. Its uses span a wide range, from addressing inflammatory conditions to supporting skin health and detoxification. The plant's adaptogenic qualities are also frequently highlighted.

Other Names of Chopchini

  • China Root
  • Smilax Glabra
  • Rough Bindweed
  • Tikur
  • Chinese Smilax

Benefits of Chopchini

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<h3> Absolute Contraindications of Chopchini </h3> <h4> Pregnancy or breastfeeding (Avoid during pregnancy/lactation)</h4> <ul> <li> 🤰</li> <li> Recommendation: Do not use Chopchini during pregnancy or while breastfeeding; consult your healthcare provider for alternatives.</li> <li> Reasoning: Some Smilax species contain flavonoids and other compounds with estrogenic or anti-estrogenic activity; safety for fetal development and lactation is not established, so use is avoided until proven safe.</li> <li> Scientific_Study_Title: Estrogenic and anti-estrogenic compounds from the Thai medicinal plant, Smilax corbularia (Smilacaceae).</li> <li> Scientific_Study_Authors: Wungsintaweekul B, Umehara K, Miyase T, Noguchi H.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/21315392/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: The authors isolated multiple flavonoid and related compounds from Smilax corbularia and tested them in estrogen-responsive human breast cancer cell lines (MCF-7, T47D). The study found that specific flavanonol rhamnosides had suppressive effects on estradiol-induced cell proliferation at low micromolar concentrations, while some acetylated derivatives exhibited estrogenic activity at higher concentrations. Because the plant yields both estrogenic and anti-estrogenic molecules, the paper highlights that Smilax extracts can modulate estrogen signaling in biological systems - a reason for caution in pregnancy and lactation when hormonal balance and fetal exposure matter.</p> </li> </ul> <h4> Known hypersensitivity / asthma or prior occupational allergy to sarsaparilla</h4> <ul> <li> ⚠️</li> <li> Recommendation: Do not use Chopchini if you have a known allergy to Smilax or if you have asthma that is worsened by herbal dusts; avoid inhaling root powder or dust.</li> <li> Reasoning: Case reports document that sarsaparilla root dust can sensitize and trigger occupational asthma and allergic responses in exposed people.</li> <li> Scientific_Study_Title: Occupational asthma caused by sarsaparilla root dust.</li> <li> Scientific_Study_Authors: Vandenplas O, Depelchin S, Toussaint G, Delwiche JP, Weyer RV, Saint-Remy JM.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/8648042/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: The paper reports a clinical case of occupational asthma attributed to inhalation of sarsaparilla (Smilax) root dust. Diagnostic testing linked symptoms and serologic/immunologic markers to exposure; the report warns that handling or processing dried root material can provoke IgE-mediated respiratory sensitization in susceptible individuals. The case supports the need to avoid exposure and use protective measures or avoid use entirely in people with known respiratory sensitivity.</p> </li> </ul> <h4> Concurrent methotrexate therapy (patients on methotrexate) </h4> <ul> <li> 💊</li> <li> Recommendation: Avoid taking Chopchini (especially Smilax glabra preparations) with methotrexate unless supervised by a clinician; do not self-combine.</li> <li> Reasoning: Preclinical pharmacokinetic data show Smilax glabra can significantly alter methotrexate blood and tissue levels by modulating drug transporters, which may change efficacy or toxicity of methotrexate.</li> <li> Scientific_Study_Title: Smilax glabra Rhizoma affects the pharmacokinetics and tissue distribution of methotrexate by increasing the P-glycoprotein mRNA expression in rats after oral administration.</li> <li> Scientific_Study_Authors: Li Y, Deng S, Zhao Y, Liu L, Zhao R.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/28944899/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: In a rat model, co-administration of Smilax glabra rhizome extract with methotrexate significantly decreased plasma area under the curve (AUC) and Cmax for methotrexate (reductions of ~44.5% and ~48.2% respectively) while altering tissue distribution in an organ-dependent manner. The herb increased intestinal P-glycoprotein mRNA expression, suggesting enhanced efflux and altered absorption/elimination of methotrexate. These pharmacokinetic changes imply clinically relevant interactions that could reduce methotrexate exposure or shift distribution, supporting avoidance or tight monitoring when combined.</p> </li> </ul> <h4> Severe renal impairment / volume depletion (patients with advanced kidney disease)</h4> <ul> <li> 🩺</li> <li> Recommendation: Avoid or use under specialist supervision if you have severe kidney disease or are on potassium-wasting diuretics; monitor fluid and electrolytes closely.</li> <li> Reasoning: Several Smilax species show measurable diuretic effects in animal studies; in patients with compromised renal function this could worsen fluid or electrolyte imbalances.</li> <li> Scientific_Study_Title: Diuretic activity of some Smilax canariensis fractions.</li> <li> Scientific_Study_Authors: Abdala S, Martín-Herrera D, Benjumea D, Gutiérrez SD.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/22289346/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: Experimental administration of aqueous and organic fractions from Smilax canariensis in saline-loaded rodents produced dose-dependent increases in urine output and alterations in urinary electrolytes (Na+, K+). Certain intermediate-polarity fractions increased diuresis to levels comparable with reference diuretics (hydrochlorothiazide, furosemide) in the model. The authors conclude that phytochemicals in Smilax can produce clinically meaningful diuretic actions, supporting caution in patients where diuresis or electrolyte loss is harmful.</p> </li> </ul> <h3> Relative Contraindications of Chopchini </h3> <h4> Use with xanthine oxidase inhibitors (e.g., allopurinol) - gout medications</h4> <ul> <li> ↔️</li> <li> Recommendation: Use caution and consult your physician if combining Chopchini with allopurinol; dose adjustment or monitoring may be needed.</li> <li> Reasoning: Certain Smilax saponins and fractions have independent uricosuric and xanthine oxidase inhibitory effects and showed additive or synergistic reduction of serum uric acid when combined with allopurinol in animal studies.</li> <li> Scientific_Study_Title: Anti-hyperuricemia effects of allopurinol are improved by Smilax riparia, a traditional Chinese herbal medicine.</li> <li> Scientific_Study_Authors: Wu XH, Wang CZ, Wang SQ, Mi C, He Y, Zhang J, Zhang YW, Anderson S, Yuan CS.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/25617746/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: In a hyperuricemic mouse model, combined administration of Smilax riparia saponins with allopurinol produced greater declines in serum uric acid and increases in urinary uric acid than allopurinol alone. Mechanistic assays demonstrated inhibition of xanthine oxidase and modulation of renal urate transporters (down-regulation of URAT1 and up-regulation of OAT1), suggesting a synergistic hypouricemic effect. While promising for gout control, the result indicates potential for unexpected additive pharmacologic impact when combined with allopurinol.</p> </li> </ul> <h4> Hormone-sensitive conditions (breast, uterine, ovarian cancers)</h4> <ul> <li> ⚕️</li> <li> Recommendation: Avoid or consult an oncologist/endocrinologist before using Chopchini if you have hormone-sensitive cancer or are on hormonal therapy.</li> <li> Reasoning: Some Smilax extracts contain compounds that can act as estrogen agonists or antagonists in cellular assays; such activity could theoretically influence hormone-dependent disease processes or therapy.</li> <li> Scientific_Study_Title: Estrogenic and anti-estrogenic compounds from the Thai medicinal plant, Smilax corbularia (Smilacaceae).</li> <li> Scientific_Study_Authors: Wungsintaweekul B, Umehara K, Miyase T, Noguchi H.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/21315392/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: The authors isolated multiple flavonoid derivatives from Smilax corbularia and tested their influence on estrogen-responsive human breast cancer cell lines. Results showed both estrogenic and anti-estrogenic activities depending on compound and concentration, indicating Smilax extracts can modulate estrogen receptor pathways. Given this dual potential, caution is advised for people with hormone-sensitive conditions due to possible interference with disease biology or endocrine therapies.</p> </li> </ul> <h4> Use with potent P-glycoprotein substrates or narrow-therapeutic-index drugs</h4> <ul> <li> 🔁</li> <li> Recommendation: Consult your prescriber before combining Chopchini with drugs that rely on P-glycoprotein transport (e.g., certain chemotherapeutics, immunosuppressants); monitoring or spacing doses may be required.</li> <li> Reasoning: Smilax glabra increased intestinal P-glycoprotein expression in animal models, altering absorption and tissue distribution of co-administered drugs like methotrexate; similar effects could affect other P-gp substrates.</li> <li> Scientific_Study_Title: Smilax glabra Rhizoma affects the pharmacokinetics and tissue distribution of methotrexate by increasing the P-glycoprotein mRNA expression in rats after oral administration.</li> <li> Scientific_Study_Authors: Li Y, Deng S, Zhao Y, Liu L, Zhao R.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/28944899/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: The study demonstrated that co-administration of Smilax glabra with methotrexate in rats reduced methotrexate systemic exposure and Cmax while increasing intestinal P-glycoprotein mRNA expression ~2.5-fold. These changes suggest Smilax preparations can modify drug transporters and thus the pharmacokinetics of drugs that are P-gp substrates, warranting caution with narrow-therapeutic-index medications.</p> </li> </ul>

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<h4> Increased urination / dehydration risk</h4> <ul> <li> 🚽</li> <li> Side effect summary: Chopchini (Smilax species) can increase urine output which may lead to dehydration or electrolyte changes if fluid balance is not maintained.</li> <li> Recommendation: Drink adequate fluids when using Chopchini and avoid combining with other diuretics unless supervised by a clinician; seek medical help for dizziness or marked weakness.</li> <li> Reasoning: Animal studies show dose-dependent diuretic effects from Smilax extracts; clinically this could exacerbate hypovolemia or electrolyte disturbances in vulnerable patients.</li> <li> Severity Level: Moderate</li> <li> Scientific_Study_Available: Yes</li> <li> Scientific_Study_Title: Diuretic activity of some Smilax canariensis fractions.</li> <li> Scientific_Study_Authors: Abdala S, Martín-Herrera D, Benjumea D, Gutiérrez SD.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/22289346/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: The study tested multiple extracts of Smilax canariensis in saline-loaded mice and observed significant, dose-dependent increases in urine volume and changes in urinary electrolyte excretion. Certain fractions produced diuresis comparable to standard diuretics in this model. The findings indicate that Smilax phytochemicals can act as active diuretics, explaining increased urination seen in traditional use and supporting a moderate risk of dehydration or electrolyte imbalance in susceptible people.</p> </li> </ul> <h4> Respiratory allergy / asthma exacerbation</h4> <ul> <li> 😮‍💨</li> <li> Side effect summary: Inhalation of root dust or powdered forms may trigger allergic reactions or occupational asthma in sensitized individuals.</li> <li> Recommendation: Avoid inhaling powders; people with asthma or known herbal allergies should not use Chopchini without medical advice; seek immediate medical care for breathing problems.</li> <li> Reasoning: Case reports document IgE-mediated occupational asthma from sarsaparilla root dust, showing respiratory sensitization is possible.</li> <li> Severity Level: Severe</li> <li> Scientific_Study_Available: Yes</li> <li> Scientific_Study_Title: Occupational asthma caused by sarsaparilla root dust.</li> <li> Scientific_Study_Authors: Vandenplas O, Depelchin S, Toussaint G, Delwiche JP, Weyer RV, Saint-Remy JM.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/8648042/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: The case report describes an occupational asthma instance linked to sarsaparilla root dust exposure, with clinical and immunologic findings supporting sensitization. The report highlights that workers processing or handling dried root material can develop respiratory allergy and that exposure avoidance is required for affected individuals.</p> </li> </ul> <h4> Altered drug levels (example: methotrexate) - pharmacokinetic change</h4> <ul> <li> ⚖️</li> <li> Side effect summary: Chopchini preparations (notably S. glabra) may change levels of co-administered drugs, decreasing blood levels of some medicines and increasing tissue exposure in certain organs.</li> <li> Recommendation: Do not combine with narrow-therapeutic-index drugs (e.g., methotrexate) without specialist supervision and monitoring of drug levels/effects.</li> <li> Reasoning: Rat studies show Smilax glabra alters P-glycoprotein expression and significantly changes methotrexate AUC/Cmax and tissue distribution, which could produce loss of effect or altered toxicity.</li> <li> Severity Level: Severe</li> <li> Scientific_Study_Available: Yes</li> <li> Scientific_Study_Title: Smilax glabra Rhizoma affects the pharmacokinetics and tissue distribution of methotrexate by increasing the P-glycoprotein mRNA expression in rats after oral administration.</li> <li> Scientific_Study_Authors: Li Y, Deng S, Zhao Y, Liu L, Zhao R.</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/28944899/</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: The experimental study found that concurrent administration of Smilax glabra extract reduced systemic methotrexate exposure (AUC and Cmax) and altered organ distribution in rats, associated with induced P-glycoprotein expression in the small intestine. These changes could translate to reduced therapeutic levels or atypical tissue accumulation of co-medications in patients.</p> </li> </ul> <h4> Gastrointestinal upset (nausea, stomach irritation)</h4> <ul> <li> 🤢</li> <li> Side effect summary: Large doses of saponin-rich Smilax preparations may irritate the stomach and cause nausea, loose stools or abdominal discomfort.</li> <li> Recommendation: Start with low doses if using and stop if significant GI symptoms occur; consult a clinician if severe or persistent.</li> <li> Reasoning: Traditional and pharmacopoeial sources report GI irritation at high intake; human clinical trial data are limited.</li> <li> Severity Level: Mild</li> <li> Scientific_Study_Available: NA</li> <li> Scientific_Study_Title: NA</li> <li> Scientific_Study_Authors: NA</li> <li> Scientific_Study_Link: NA</li> <li> Scientific_Study_Excerpt: NA</li> </ul>

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<h4> Methotrexate (antimetabolite / immunosuppressant)</h4> <ul> <li> Interaction_Details: Preclinical data show Smilax glabra co-administration can lower methotrexate plasma exposure (AUC and Cmax) and change tissue distribution by up-regulating intestinal P-glycoprotein, potentially reducing systemic levels and altering organ exposure.</li> <li> Severity: Severe</li> <li> Recommendation: Avoid simultaneous use; if unavoidable, consult the prescribing physician and monitor drug levels, effects, and toxicity closely.</li> <li> Scientific_Study_Available: Yes</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/28944899/</li> <li> Scientific_Study_Title: Smilax glabra Rhizoma affects the pharmacokinetics and tissue distribution of methotrexate by increasing the P-glycoprotein mRNA expression in rats after oral administration.</li> <li> Scientfic_Study_Authors: Li Y, Deng S, Zhao Y, Liu L, Zhao R.</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: In a controlled rat study, combined dosing with Smilax glabra extract produced marked reductions in methotrexate systemic exposure and peak concentration, with tissue-dependent increases in lung and spleen concentrations. Increased intestinal P-glycoprotein mRNA expression was observed, providing a mechanistic basis for altered absorption and disposition. The authors conclude that S. glabra can affect methotrexate pharmacokinetics in a way that may influence therapeutic effectiveness and safety, indicating careful consideration before co-administration.</p> </li> </ul> <h4> Allopurinol (xanthine oxidase inhibitor for gout)</h4> <ul> <li> Interaction_Details: Smilax saponins and flavonoids can independently lower serum uric acid (via xanthine oxidase inhibition and altered renal urate transport), and animal data show enhanced hypouricemic effects when combined with allopurinol.</li> <li> Severity: Moderate</li> <li> Recommendation: Use with caution; combining may increase uricosuric effect - monitor uric acid, renal function and adjust allopurinol dose if needed under clinician guidance.</li> <li> Scientific_Study_Available: Yes</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/25617746/</li> <li> Scientific_Study_Title: Anti-hyperuricemia effects of allopurinol are improved by Smilax riparia, a traditional Chinese herbal medicine.</li> <li> Scientfic_Study_Authors: Wu XH, Wang CZ, Wang SQ, Mi C, He Y, Zhang J, Zhang YW, Anderson S, Yuan CS.</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: In hyperuricemic mice, combined administration of Smilax riparia saponins with standard allopurinol produced greater reductions in serum uric acid and increased urinary uric acid compared with allopurinol alone. Mechanisms included inhibition of xanthine oxidase and modulation of renal urate transporters (URAT1, GLUT9, OAT1). The data suggest a synergistic lowering of urate but also point to the need for monitoring to avoid excessive uric-acid shifts or renal effects.</p> </li> </ul> <h4> Diuretics (loop/thiazide class) and drugs affecting fluid/electrolyte balance</h4> <ul> <li> Interaction_Details: Smilax extracts show diuretic activity in animal models; combining with prescribed diuretics may produce additive diuresis and electrolyte disturbances (sodium/potassium changes).</li> <li> Severity: Moderate</li> <li> Recommendation: Avoid unsupervised combination; if combined, monitor blood pressure, electrolytes and renal function; adjust diuretic dosing under clinician supervision.</li> <li> Scientific_Study_Available: Yes</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/22289346/</li> <li> Scientific_Study_Title: Diuretic activity of some Smilax canariensis fractions.</li> <li> Scientfic_Study_Authors: Abdala S, Martín-Herrera D, Benjumea D, Gutiérrez SD.</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: Experimental dosing of Smilax fractions in saline-loaded rodents resulted in significant, dose-dependent increases in urine output and changes in urinary electrolytes; some extracts matched the diuretic effect of reference drugs in the model. These findings support the potential for additive diuretic effect and electrolyte change if Smilax preparations are combined with pharmaceutical diuretics.</p> </li> </ul> <h4> Drugs metabolized by CYP2A6 (or affected by CYP induction)</h4> <ul> <li> Interaction_Details: Smilax china extracts induced CYP2A6 expression in hepatic cell models, increasing metabolic conversion of nicotine to cotinine; induction of hepatic enzymes could alter the metabolism of drugs handled by CYP2A6.</li> <li> Severity: Mild</li> <li> Recommendation: If you take medications primarily cleared by CYP2A6, consult your clinician or pharmacist about possible altered metabolism; monitoring or dose adjustment may be advised.</li> <li> Scientific_Study_Available: Yes</li> <li> Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/25220663/</li> <li> Scientific_Study_Title: Smilax china root extract detoxifies nicotine by reducing reactive oxygen species and inducing CYP2A6.</li> <li> Scientfic_Study_Authors: Kim KM, Suh JW, Yang SH, Park TS, Shim SM.</li> <li> Scientific_Study_Excerpt: <p>Paraphrase: In HepG2 cell models the ethanol extract of Smilax china root upregulated CYP2A6 expression and enhanced conversion of nicotine to cotinine, while reducing oxidative stress. The in-vitro results indicate Smilax components can induce CYP2A6 expression, implying potential for altered clearance of compounds primarily metabolized by this enzyme in vivo; clinical significance depends on dose and exposure but warrants attention when combined with CYP2A6 substrates.</p> </li> </ul>