Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

ChalCurb 200 mg Ingredients & Drug Interactions

by Swanson Best Weight-Control Formulas

ChalCurb 200 mg label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking ChalCurb 200 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

ChalCurb 200 mg is a dietary supplement by Swanson Best Weight-Control Formulas with 1 active ingredient. Its ingredients are commonly taken for general wellness and longevity, antioxidant support, heart and cholesterol health.Based on those ingredients, 186 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are ChalCurb Ashitaba extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against ChalCurb 200 mg by Swanson Best Weight-Control Formulas

Ask about any prescription or over-the-counter medication and we check it for interactions with ChalCurb 200 mg by Swanson Best Weight-Control Formulas — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of ChalCurb 200 mg by Swanson Best Weight-Control Formulas

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 16, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

ChalCurb 200 mg contains one active ingredient: ashitaba extract (a plant from the carrot family used in some traditional supplements). The rest of the capsule is made up of inactive ingredients — cyclodextrin, hypromellose, rice bran, silica, and magnesium stearate — which help bind and deliver the active ingredient.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

This is a single-ingredient Ashitaba product and its label doesn't state a use — see Ashitaba's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence for ashitaba extract's effectiveness for alcohol-related liver disease is insufficient. We don't hold enough reliable data to know whether it works for this purpose, so that claim can't be rated.

The evidence, ingredient by ingredient Ashitaba

How safe is it?

Some data gaps
Safety Information · database check
Some gaps

Safety data exists for these ingredients, but with some important gaps.

Why this rating?
  • We hold adverse-effect (side-effect) data for 0 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Ashitaba is likely safe when used as a food, but safety data for concentrated supplements is limited. The safety data advises against using concentrated ashitaba supplements during pregnancy and while breastfeeding, so avoid it during both periods.

Side effects, ingredient by ingredient Ashitaba

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Ashitaba.
  • The most serious interaction on file is rated Moderate.
  • For scale: 186 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking ChalCurb, double-check your medications against the CYP1A2 substrates that ashitaba extract can interact with (Moderate severity). These include certain heart-rhythm drugs, pain relievers, psychiatric medications, and some cancer treatments.

Use the search tool on this page to confirm whether any of your prescriptions are affected.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and some safety-information gaps remain.

ChalCurb may be worth a conversation if you're exploring plant-based options and don't take CYP1A2 substrate medications. If you're pregnant, nursing, or on any prescription medications — especially heart, psychiatric, or pain drugs — check with your doctor or pharmacist before starting it.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated May 24, 2018.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about ChalCurb 200 mg, straight from the product label.

Brand Swanson Best Weight-Control Formulas
Barcode (UPC) 087614040882
Net contents 30 Veggie Capsule(s)
Market status On market
Date entered into DSLD May 24, 2018
DSLD ID 176667
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Vegetarian, Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for ChalCurb 200 mg by Swanson Best Weight-Control Formulas, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Veggie Capsule(s)
Maximum serving Sizes:
1 Veggie Capsule(s)
UPC/BARCODE
087614040882
IngredientAmount% DV
ChalCurb Ashitaba extract200 mg--

Other ingredients: Cyclodextrin, Hypromellose, Rice Bran, Silica, Magnesium Stearate

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula

Ashitaba extract 8% Chalcones

FDA Statement of Identity

Standardized Herbal Supplement

Seals/Symbols

V Vegetarian formula

Formulation

V Vegetarian formula

Precautions

Do not use if seal is broken.

Keep out of reach of children.

Storage

Store in a cool, dry place.

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take one veggie capsule per day after dinner with water.

General Statements

To reorder, call toll free 1-800-437-4148 or visit our website at www.swansonvitamins.com

Brand IP Statement(s)

ChalCurb is a trademark of Japan Bio Science Laboratory.

General

SWD088 Rev 0 12 12 17

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

ChalCurb 200 mg by Swanson Best Weight-Control Formulas label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

ChalCurb 200 mg label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in ChalCurb 200 mg by Swanson Best Weight-Control Formulas

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Veggie Capsule(s) Dosage formCapsule Amounts shown are per serving.

ChalCurb Ashitaba extract

Interacts with
186 drugs
200 mg per serving Form: Chalcones

Ashitaba is a leafy plant from Japan that is eaten as a vegetable and taken as a supplement for general health, antioxidant, and heart benefits. Most...

ChalCurb Ashitaba extract monograph & interactions

Other (inactive) ingredients: Cyclodextrin, Hypromellose, Rice Bran, Silica, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

ChalCurb 200 mg by Swanson Best Weight-Control Formulas Drug Interactions

Want to check YOUR meds against ChalCurb 200 mg?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
186Drugs
186 Moderate

Ingredients driving the most interactions

ChalCurb Ashitaba extract 186

Individual Drug Interactions

The ingredients in ChalCurb 200 mg interact with 186 drugs. Click any drug to see the details.

1 of the 1 ingredient in ChalCurb 200 mg interact with drugs. Each result below shows which ingredient is responsible. ChalCurb Ashitaba extract

Each ingredient & the kinds of drugs it affects

For each ingredient in ChalCurb 200 mg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

ChalCurb Ashitaba extract1 drug type · 186 drugs

Cytochrome P450 1A2 (Cyp1A2) Substrates

In vitro research shows that ashitaba extract inhibits cytochrome P450 (CYP) 1A2. Theoretically, concomitant use of ashitaba with CYP1A2 substrates might decrease the clearance of these substrates and increase the risk for adverse effects. However, this interaction has yet to be reported in humans. Until more is known, use with caution.

Likelihood Possible Evidence D
ChalCurb Ashitaba extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for ChalCurb 200 mg, from the product label.

Swanson Best Weight-Control Formulas

See all Swanson Best Weight-Control Formulas products
Name
Swanson Health Products
City
Fargo
State
ND
ZipCode
58104
Phone Number
1-800-437-4148
Web Address
www.swansonvitamins.com
Pharmacist Counseling Corner

ChalCurb 200 mg by Swanson Best Weight-Control Formulas: Common Questions

Does ChalCurb 200 mg by Swanson Best Weight-Control Formulas interact with any medications?
Yes. Based on its ingredients, ChalCurb 200 mg has a known interaction with 186 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
ChalCurb 200 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is ChalCurb safe during pregnancy?
No — the safety data advises against using this concentrated ashitaba supplement during pregnancy because there isn't enough research to know it's safe. Talk with your doctor or pharmacist about whether it's right for you.
Is ChalCurb safe while breastfeeding?
No — the safety data advises against using this concentrated ashitaba supplement while breastfeeding. There isn't enough research to know whether it passes into breast milk or what effects it might have. Talk with your doctor or pharmacist about safer options.
Does ChalCurb actually work for weight control?
The product facts we hold don't include effectiveness data for weight control — only for alcohol-related liver disease, and that rating is insufficient evidence. We can't confirm whether it works for weight management.
What is ashitaba extract?
Ashitaba is a plant from the carrot family used in some traditional supplements. In this product, it's concentrated into an extract form.
Does ChalCurb interact with other supplements or herbals?
The interaction data we hold covers only prescription and over-the-counter medications. If you take other supplements or herbal products, talk with your pharmacist to check for interactions outside our database.
What are the side effects of ChalCurb?
The product facts don't list any reported adverse effects from ChalCurb, but ashitaba supplement safety hasn't been studied well overall, so unusual symptoms could still occur — talk with your pharmacist if something feels off.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if ChalCurb 200 mg is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

ChalCurb 200 mg label
Go deeper

The Full Monographs Behind ChalCurb 200 mg’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Ashitaba

Interacts with 186 drugs

Ashitaba is a leafy plant from Japan that is eaten as a vegetable and taken as a supplement for general health, antioxidant, and heart benefits. Most of the supporting research comes from la...

Read the full Ashitaba monograph →
Sources

Sources & How We Checked

ChalCurb 200 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 2 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Ashitaba 2 references
  1. Kwon D, Yoon S, Carter O, Bailey GS, Dashwood RH. Antioxidant and antigenotoxic activities of Angelica keiskei, Oenanthe javanica and Brassica oleracea in the Salmonella mutagenicity assay and in HCT116 human colon cancer cells. Biofactors. 2006;26(4):231
  2. Noh HM, Ahn EM, Yun JM, Cho BL, Paek YJ. Angelica keiskei Koidzumi extracts improve some markers of liver function in habitual alcohol drinkers: a randomized double-blind clinical trial. J Med Food. 2015;18(2):166-72.

See these in context on the Ashitaba monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team