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Undecylenic Acid by Premier Brands of America Inc.

Dosage form: liquid
Ingredients: UNDECYLENIC ACID 40mg in 1.7mL
Labeler: Premier Brands of America Inc.
NDC Code: 56104-116

Disclaimer: Most OTC drugs are not reviewed and approved by FDA, however they may be marketed if they comply with applicable regulations and policies. FDA has not evaluated whether this product complies.

Anti-Fungal Pen

​Active ingredient

Undecylenic acid 25%w/w




For cure of most tinea pedis (athlete's foot) and tinea corporis (ringworm).

For relief of:
  • itching
  • burning
  • redness
  • irritation
  • scaling
  • soreness
  • discomfort which may accompany these conditions


For external use only

If pregnant or breastfeeding

consult a healthcare professional before use.

Do not use

on children 2 years of age unless directed by a doctor.

When using this product

avoid contact with eyes

Use only as directed

by a doctor on persons with highly sensitive skin.

Stop use and consult a doctor if
  • there is no improvement within 4 weeks
  • irritation occurs

Keep out of children.

If accidental ingestion occurs, get medical help or contact a Poison Control Center right away.


Read all warnings and directions. Use only as directed.

  • clean the affected area and dry thoroughly
  • twist pen base with 3 clicks to saturate brush
  • apply a thin layer of the product over the affecter area twice daily (morning and night) or as directed by a doctor
  • brush applicator allows for easy application under nails and surrounding cuticle area
  • supervise children in the use of this product
  • for athlete's foot: pay special attention to spaces between 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. If conditions persists longer, consult a doctor
  • this product is not effective on the scalp or nails

Other information
  • store at room temperature 15°-30°C (59° - 86°F)
  • protect from freezing. If freezing occurs warm to room temperature
  • keep tightly closed when not in use

​Inactive ingredient

isopropyl palmitate


Call 1-866-964-0939

​Principal Display Panel

Maximum Strength
Anti-fungal Pen
25% Undecylenic Acid

Eliminates fungus on fingers, toes and around nails

  • Pre-filled applicator pen brush
  • Convenient & easy to apply
  • Dries quickly
  • Non-oily clear formula

Net Contents: 0.057 FL OZ(1.7mL)

anti-fungal pen liquid
Product Information
Product TypeHUMAN OTC DRUGItem Code (Source)NDC:56104-116
Route of AdministrationTOPICALDEA Schedule    
Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Inactive Ingredients
Ingredient NameStrength
#Item CodePackage Description
1NDC:56104-116-171.7 mL in 1 TUBE, WITH APPLICATOR
Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
OTC monograph finalpart333C07/01/2013
Labeler - Premier Brands of America Inc. (080051232)

Revised: 11/2017
Premier Brands of America Inc.

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Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.