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ZYNTHIX Undecylenic Acid Solution 1 g/4mL Solution

by Shenzhen Siwei Yijiu Trading Co., Ltd. · 3 APPLICATOR in 1 BOX (87575-4041-1) / 4 mL in 1 APPLICATOR
NDC 87575-4041-01
🏷️ FDA NDC (as labeled) 87575-4041-1 billing pads the package segment with a zero
OTC On market Non-controlled
🗂️ Data synced Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

🆔 Identity & classification

FDA NDC (as labeled) 87575-4041-1
Product NDC 87575-4041
11-digit billing NDC 87575404101
RxCUI 998329
UNII K3D86KJ24N
Application # M005
SPL Set ID 4ef4a167-f673-efb4-e063-6294a90a3026
DEA schedule Non-controlled
Marketing category OTC MONOGRAPH DRUG
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2026-04-08
Route TOPICAL
Dosage form SOLUTION
Substance UNDECYLENIC ACID
Why two NDCs? The FDA registers this code as 87575-4041-1 — a 5-4-1 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the package segment → 87575-4041-01. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

🏷️ RxNorm drug class

This medicine belongs to the Other antifungals for topical use class.

Drug family (ATC) Other antifungals for topical use
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

🏭 Manufacturer & labeler

LabelerShenzhen Siwei Yijiu Trading Co., Ltd.
FDA applicationM005 (OTC MONOGRAPH DRUG)
Labeler code87575
First marketedApr 2026
Product typeHuman Otc Drug
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

🩺 Clinical

📗 Our plain-language guide HelloPharmacist
  • It treats three common fungal skin infections: athlete's foot (the itchy, scaly condition that affects the feet and toes), jock itch (a fungal rash in the groin area), and ringworm...
  • What exactly does undecylenic acid treat?
  • For athlete's foot and ringworm, most products are used daily for 4 full weeks. For jock itch, 2 weeks of daily use is typically recommended. Some nail products note that visible i...
  • That depends on the product. Most undecylenic acid creams, sprays, and general topical solutions are not effective on nails and should not be used there. However, some products — l...
📖 Read our full Undecylenic guide →

Supplement & herbal interactions

🌿 Drug–supplement interaction checker →
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

🧪 Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.

  • 0.2 g / 4 mL UNII 3K9958V90M
    A liquid solvent derived from fermentation or chemical synthesis. In medicines, alcohol dissolves active ingredients, helps preserve the product, and improves how the body absorbs certain drugs.
  • 0.004 g / 4 mL UNII M89NIB437X
    Borneol is a waxy, plant-derived alcohol obtained from camphor trees or made synthetically. It's used in medicines as a flavoring agent and penetration enhancer to improve how active ingredients are absorbed.
  • 0.04 g / 4 mL UNII PDC6A3C0OX
    Glycerin is a clear, thick liquid derived from plant oils or fats. It acts as a humectant to retain moisture, a sweetener, and a solvent in medications.
  • 1 g / 4 mL UNII ND2M416302
    Isopropyl alcohol is a clear liquid solvent derived from petroleum. In medicines, it dissolves active ingredients and other components, helps the product flow smoothly, and aids in sterilization during manufacturing.
  • 0.08 g / 4 mL UNII L7T10EIP3A
    A cooling compound from mint plants used as a flavoring agent and to create a fresh sensation in medicines. It helps mask bitter tastes and improve how the product feels in the mouth.
  • 1.676 g / 4 mL UNII 059QF0KO0R
    Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.

6 inactive ingredients listed in the exact product block matched to this NDC.

The official label also statesAlcohol denat, Borneol, Glycerin, Isopropyl alcohol, Menthol, Water.

Label-section wording can be broader than the structured product block and may mention additional formulation ingredients.

Where does this data come from?
Data sourced from official FDA Structured Product Labeling (SPL) via DailyMed — ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

💲 Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer mLPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · quarterly No Part D plan price is available for this NDC in our data.
ℹ️
No price is published for this exact package yet. CMS surveys NADAC per package size, so a different pack of the same drug often has one.
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

🔁 Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Undecylenic Acid 25 g/100mL 49283-0025-05 Chemco 15 ml — — FDA listed —
Antifungal 25 g/100mL 49283-0250-05 Chemco 15 ml — — FDA listed —
Myco Nail A Antifungal Solution 250 mg/mL 52083-0242-30 Kramer 1 bottle — — FDA listed —
Hongo Killer 25 mg/100mL 58593-0826-01 Efficient 30 ml — — FDA listed —
Terpenicol Antifungal 25 g/100mL 63347-0600-01 Blaine 37.5 ml — — FDA listed —
Premier Value Antifungal Maximum Strength 25 mg/30mL 68016-0474-00 PHARMACY 30 ml — — FDA listed —
ELON Dual Defense Anti Fungal Formula 250 mg/mL 71171-0778-15 Little 1 bottle — — FDA listed —
Human Science Antifungal Foot Care 250 mg/mL 71356-0156-01 HUMAN 30 ml — — FDA listed —
Tripenicol S .25 g/mL 73352-0550-01 Trifluent 37.5 ml — — FDA listed —
Bldaxn Nail Repair Pen .25 g/mL 76986-0022-01 Guangdong 3 bottles — — FDA listed —
Nerante Fungus Nail Pen .25 g/mL 76986-0030-01 Guangdong 6 tubes — — FDA listed —
Fungal Nail Treatment .25 g/mL 76986-0031-01 Guangdong 30 ml — — FDA listed —
FLUSH Maximum Strength Antifungal formula 250 mg/mL 80569-0084-15 Triple 15 ml — — FDA listed —
Antifungal Treatment Liquid 25 undeclylenic Acid 250 mg/mL 83691-0000-00 SANSAR, 1 bottle — — FDA listed —
Foot Cure Nail Repair Pen 25 g/100mL 83691-0011-01 SANSAR, 4 applicators — — FDA listed —
Omzok Antifungal Pen 25 g/100mL 83804-0007-01 Shenzhen 5 applicators — — FDA listed —
WRFAATGO ANTIFUNGAL Pen Undecylenic Acid 25% .25 g/mL 83804-0012-01 Shenzhen 5 tubes — — FDA listed —
Pharmbanner Fungal Nail Renewal 25 g/100mL 83818-0019-01 Shenzhen 2 bottles — — FDA listed —
MEOLY Fungal Nail Renewal 25 g/100mL 83818-0026-01 Shenzhen 2 bottles — — FDA listed —
Fungal Nail Renewal 25 g/100mL 84007-0130-01 Medhome 30 ml — — Discontinued —
Klipp EXTRA STRENGTH TOENAIL FUNGUS TREATMENT 25 g/100mL 84558-0018-01 GUANGZHOU 30 ml — — FDA listed —
Klipp Fungal Nail Treatment 25 g/100mL 84558-0019-01 GUANGZHOU 30 ml — — FDA listed —
Nail Repair Pen .25 g/mL 84763-0008-01 Yunqi 8 tubes — — FDA listed —
Antifungal Toenail Fungus Pen .25 g/mL 84763-0009-01 Yunqi 12 ml — — FDA listed —
Fungal Nail Repair Pen .25 g/mL 84763-0011-01 Yunqi 5 bottles — — FDA listed —
Antifungal Pen 25 g/100mL 84896-0008-01 Guangzhou 15 ml — — FDA listed —
Nail Extra Strength Repair Pen 25 g/100mL 84896-0009-01 Guangzhou 12 ml — — FDA listed —
Antifungal Pen 25 g/100mL 85210-0001-01 XF 1 applicator — — FDA listed —
South Beach Multi-Purpose Nail Repair 25 g/100mL 85214-0025-05 SOUTH 1 bottle — — FDA listed —
Bldaxn FUNGAL NAIL RENEWZL 25 g/100mL 85248-0029-01 Jiangxi 2 bottles — — FDA listed —
Puvida Fungal Nail Renewal 25 g/100mL 85248-0090-01 Jiangxi 30 ml — — FDA listed —
ViLLsure Antifungal Pen 25 g/100mL 85248-0151-01 Jiangxi 5 tubes — — FDA listed —
Serynth Antifungal Nail Treatment Pen 25 g/100mL 85248-0165-01 Jiangxi 2.5 ml — — FDA listed —
LYSSERA Fungal Nail Renewal 25 g/100mL 85248-0174-01 Jiangxi 4 tubes — — FDA listed —
Werpeka Fungal Nail Renewal 25 g/100mL 85248-0184-01 Jiangxi 2.5 ml — — FDA listed —
Toyknier Multi-Purpose Treatment 25 g/100mL 85248-0187-01 Jiangxi 30 ml — — FDA listed —
Minadcin Toenail Fungus Pen 25 g/100mL 85248-0199-01 Jiangxi 5 tubes — — FDA listed —
Beukow Antifungal Pen 25 g/100mL 85248-0200-01 Jiangxi 4 tubes — — FDA listed —
Kakalsa TOENAIL FUNGUS TREATMENT 25 g/100mL 85248-0204-01 Jiangxi 4 tubes — — FDA listed —
Avenaster Fungal Nail Care Duo Set (Night) 25 g/100mL 85248-0214-01 Jiangxi 3 tubes — — FDA listed —
TrpWinner TOENAIL FUNGUS PEN 25 g/100mL 85248-0218-01 Jiangxi 4 ml — — FDA listed —
Cyyzrose Antifungal Nail 25 g/100mL 85248-0222-01 Jiangxi 3 tubes — — FDA listed —
Bodykoo Nail Fungus Treatment 25 g/100mL 85248-0227-01 Jiangxi 15 ml — — FDA listed —
Sovs Fungal Nail Repair Renewal 25 g/100mL 85248-0232-01 Jiangxi 30 ml — — FDA listed —
Fungal Nail Treatment 25 g/100mL 85308-0002-01 Gaoye 30 ml — — Discontinued —
Fungal Nail Treatment 25 g/100mL 85308-0003-01 Gaoye 30 ml — — Discontinued —
Toenail Fungus Treatment 25 g/100mL 85569-0005-01 100 30 ml — — FDA listed —
Tegasolve Toenail Fungus Treatment 25 g/100mL 85578-0003-01 Zhengzhou 1 bottle — — FDA listed —
OetMoe Antifungal Solution 250 mg/mL 85636-0007-01 Shenzhen 20 ml — — FDA listed —
Bee Venom Toenail Fungus Treatment 250 mg/mL 85636-0008-01 Shenzhen 20 ml — — FDA listed —
Bee Venom Toenail Fungus Treatment 250 mg/mL 85636-0011-01 Shenzhen 20 ml — — FDA listed —
Tobcharm Fungus Nail Renewal 25 g/100mL 85817-0005-01 Guangzhou 2 bottles — — FDA listed —
Arflom Toenail Fungus Treatment Liquid 25 g/100mL 85817-0006-01 Guangzhou 2 bottles — — FDA listed —
VTROUY Fungus Nail Renewal 25 g/100mL 85817-0007-01 Guangzhou 2 bottles — — FDA listed —
FUNGLARA Anti Fungal 250 mg/mL 87028-0876-00 FUNGLARA 15 ml — — FDA listed —
Nail Fungal Pen 25 g/100g 87298-0015-01 Guangzhou 3 g — — FDA listed —
Toenail Fungus Pen 25 g/100g 87298-0016-01 Guangzhou 3 g — — FDA listed —
CuraNails Antifungal Pen 25 g/100mL 87300-0001-01 Quality 3 applicators — — FDA listed —
Lakeim Fungal Nail Repair Pen 25 g/100mL 87408-0007-01 Guangzhou 3 tubes — — FDA listed —
Lakeim FUNGAL NAIL RENEWAL Kit 25 g/100mL 87408-0009-01 Guangzhou 2 bottles — — FDA listed —
OSIMOON Fungal Nail Treatment 25 g/100mL 87408-0014-01 Guangzhou 2 bottles — — FDA listed —
Uauko Fungal Nail Treatment 25 g/100mL 87408-0018-01 Guangzhou 2 bottles — — FDA listed —
VTROUY Fungal Nail Renewal Pen 25 g/100mL 87408-0023-01 Guangzhou 3 tubes — — FDA listed —
YEARCHOICE Fungal Nail Repair Pen 25 g/100mL 87408-0024-01 Guangzhou 3 tubes — — FDA listed —
Assielf Antifungal Pen 25 g/100mL 87418-0002-01 Shenzhen 3 tubes — — FDA listed —
Zynthix 1 g/4mLthis 87575-4041-01 Shenzhen 3 applicators — — FDA listed —
About this product: other versions of the same ingredient, strength and form are listed above, least expensive first, with FDA equivalence ratings where available.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

⏳ Availability & generic status

🏛️
2026
On the market since
Apr 2026
📍
2026
Currently FDA-listed
listed with the FDA
🔒
·
No generic listed yet
brand only
ℹ️No FDA-approved generic found

We did not find an FDA-approved generic match for this exact strength, form and route.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
87575-4041-01 You're viewing this 3 APPLICATOR in 1 BOX (87575-4041-1) / 4 mL in 1 APPLICATOR 2026-04-08 Active

🧭 About this NDC listing & data coverage

Over-the-counter (OTC) product
What data is (and isn’t) available for this NDC — tap to expand
NDC identity (package / product / labeler codes) ✓ Available
Labeler ✓ Available
Product & package description ✓ Available
Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
Package photos — Not published for this NDC No photo available yet for this listing.
Inactive ingredients (structured) ✓ Available
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope.
HCPCS J-code billing crosswalk — Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Is this NDC FDA-approved?
An NDC listing does not by itself establish FDA approval — the NDC Directory records that a product is listed with FDA, not that it was reviewed and approved. This listing's marketing category is "Otc Monograph Drug". Products approved under an application carry an NDA, ANDA, or BLA number.
Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The FDA registers it as 87575-4041-1, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 87575-4041-01, written without dashes as 87575404101. The Identity section at the top of this page lists every form of this code.
What do the three segments of this NDC mean?
In 87575-4041-01, the first segment (87575) is the labeler code FDA assigned to Shenzhen Siwei Yijiu Trading Co., Ltd.; the middle segment (4041) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (01) identifies this exact package size and type. Together they name one specific package of one specific product.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Shenzhen Siwei Yijiu Trading Co., Ltd.. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
Shenzhen Siwei Yijiu Trading Co., Ltd. is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as an over-the-counter product, so it does not require a prescription. Follow the package directions, and ask your pharmacist if you are unsure whether it is right for you.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.

📄 FDA label — Drug Facts FDA SPL

The complete FDA label for this product — the official Drug Facts labeling, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration ⚠️ Warnings 🧪 Active Ingredient 🧪 Inactive Ingredients 🎯 Purpose
🎯 Indications and Usage 18 words ▾

Uses For the treatment of most athlete’s foot, jock itch, and ringworm. Relieves itching, burning, cracking, and scaling.

⏱️ Dosage and Administration 90 words ▾

Directions Clean the affected area and dry thoroughly. Twist off the cap, rotate the bottom to dispense solution to the brush. Apply a thin layer to the affected area twice daily (morning and night) or as directed by a doctor.

For athlete's foot: pay special attention to spaces between the toes; wear well-fitting, ventilated shoes, and change shoes and socks at least once daily. For athlete's foot and ringworm, use daily for 4 weeks. For jock itch, use daily for 2 weeks.

Supervise children in the use of this product.

⚠️ Warnings 86 words ▾

Warnings For external use only. This product is not effective on the scalp. Flammable.

Keep away from fire or flame. Do not use On children under 2 years of age unless directed by a doctor. For diaper rash.

When using this product Avoid contact with eyes. May cause mild stinging or burning sensation on broken skin. Stop use and ask a doctor if Irritation occurs or gets worse.

There is no improvement within 4 weeks (for athlete's foot and ringworm) or 2 weeks (for jock itch).

🧪 Active Ingredient 5 words ▾

Active ingredient Undecylenic Acid 25%

🧪 Inactive Ingredients 10 words ▾

Inactive ingredients Alcohol denat, Borneol, Glycerin, Isopropyl alcohol, Menthol, Water.

🎯 Purpose 2 words ▾

Purpose Antifungal

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗
← 87574-0123-01 · Wiggins 87576-0112-01 · Shulisa →
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.