Zynthix Solution
NDC Package 87575-4041-1

View Billable Units, 11-Digit Conversion Format, and RxNorm mappings
Table of Contents
    1. Package Information
    2. Frequently Asked Questions

Package Information

Zynthix (undecylenic acid solution) solution is 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. This formulation utilizes a solution delivery system. Marketed by Shenzhen Siwei Yijiu Trading Co., Ltd., this product is identified by NDC 87575-4041 and is authorized under FDA application M005.

Identification & Billing

NDC Package Code
87575-4041-1
Package Description
3 APPLICATOR in 1 BOX / 4 mL in 1 APPLICATOR
Product Code
87575-4041
11-Digit Billing Format
87575404101
RxNorm Crosswalk

Clinical Specifications

Proprietary Name
Zynthix
Non-Proprietary Name
Undecylenic Acid Solution
Substance Name
Undecylenic Acid
Dosage Form
Solution - A clear, homogeneous liquid1 dosage form that contains one or more chemical substances dissolved in a solvent or mixture of mutually miscible solvents.
Administration Route
Topical - Administration to a particular spot on the outer surface of the body. The E2B term TRANSMAMMARY is a subset of the term TOPICAL.
Active Ingredient(s)
UNDECYLENIC ACID 1 g/4mL
Usage Information
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.

Regulatory & Marketing

Labeler Name
Shenzhen Siwei Yijiu Trading Co., Ltd.
Product Type
Human Otc Drug
FDA Application #
M005
Marketing Category
OTC MONOGRAPH DRUG -
Start Marketing Date
04-08-2026
Listing Expiration
12-31-2027
Exclude Flag
N
Sample Package
No

Hierarchy Structure

Code Lineage

The NDC Directory contains ONLY information on final marketed drugs submitted to FDA electronically by labelers. A labeler might be a manufacturer, re-packager or re-labeler. The product information included in the NDC directory does not indicate that FDA has verified the information provided by the product labeler. Assigned NDC numbers are not in any way an indication of FDA approval of the product.

* Please review the full disclaimer at the bottom of this page.

Frequently Asked Questions

What is the distribution configuration for this product package?

The code 87575-4041-1 identifies a specific commercial package of 3 applicator in 1 box / 4 ml in 1 applicator of Zynthix, a human over the counter drug labeled by Shenzhen Siwei Yijiu Trading Co., Ltd.. This solution is formulated for topical use and contains undecylenic acid as the active substance.

Is this product currently listed with the FDA?

Yes, this product is active and verified within the NDC Directory. It was introduced to the market by Shenzhen Siwei Yijiu Trading Co., Ltd. on April 08, 2026. The current certification is valid through December 31, 2027.

How is this Shenzhen Siwei Yijiu Trading Co., Ltd. product billed for insurance claims?

For medical billing and reimbursement, this package follows the 11-digit CMS format: 87575404101. The table below illustrates the segment conversion from the 10-digit labeler code to the 11-digit provider format.

11-Digit Code Conversion

Billing payers usually require a 5-4-2 segment configuration. Below is the conversion from the 10-digit package format to the 11-digit billing format:

10-Digit Format (5-4-1)
87575-4041-1
11-Digit CMS (5-4-2)
87575-4041-01

Note: The zero is added to the Package segment to maintain the 5-4-2 structure.