Zenjbust Undecylenic Acid 25% Antifungal Pen
25 g/100mL · Liquid
- Available without prescription
- Active substance
- Undecylenic Acid 25% Antifungal Pen
- Made by
- Shenzhen Xituo Electronics Co., Ltd
- Source
- Official label
Quoted from the official source. Not yet reviewed by Mediclarum — the leaflet in your pack is authoritative.
At a glance
Quoted from the official label · 2026-07-09
Antifungal
- For the treatment of athlete's foot,jock, itch, and ringworm.
- Sold without a prescription
- FDA enforcement reports list no ongoing recall, and none from the last two years, for this product code · checked 2026-10-02
Every line above is selected, not written, from the official label. Nothing is reworded. DailyMed
What it is for
- For the treatment of athlete's foot,jock, itch, and ringworm.
From the official label · 2026-07-09 · DailyMed
Do not take it if
on children under 2 years of age unless directed by a doctor.
Quoted from the official label, section “OTC — Do Not Use”.
How to take it
These directions are for this exact strength and form. Another one is different.
- Read all warnings and directions
- Use only as directed
- Clean the affected area with soap and water and dry thoroughly
- Remove cap from pen, twist the base of the pen, with brush pointing downward, until product is expressed
- Apply a thin layer of the product over 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 shoe, and change shoes and socks at least once daily.
Quoted from the official label, section “Dosage & Administration”.
Ask a doctor first if
- Ask Doctor
- Stop use and
- ask a doctor if irritation occurs, or there is no improvement within 2 weeks for jock itch, or within 4 weeks for athlete's foot and ringworm.
Quoted from the official label, section “OTC — Ask Doctor”.
Stop and get help if
- Stop use and
- ask a doctor if irritation occurs, or there is no improvement within 2 weeks for jock itch, or within 4 weeks for athlete's foot and ringworm.
Quoted from the official label, section “OTC — Stop Use”.
Other warnings
- for external use only
- When Using avoid contact with the eyes. If contact occurs, rinse thoroughly with water.
Quoted from the official label, section “Warnings”.
Keep away from children
If swallowed, get medical help or contact a Poison Control Center right away.
Quoted from the official label, section “OTC — Keep Out of Reach of Children”.
How to store it
- Store at 15"–30°C (59" – 86°F)
- Keep cap on pen when not in use
Quoted from the official label, section “Storage and Handling”.
What kind of medicine it is
Antifungal
Quoted from the official label, section “OTC — Purpose”.
Other ingredients
Relevant if you react to a dye, a preservative, lactose or gluten.
ISOPROPYL ALCOHOL, ISOPROPYL MYRISTATE, MELALEUCA , ALTERNIFOLIA (TEA TREE) LEAF OIL, EUCALYPTOL
Quoted from the official label, section “Inactive Ingredients”.
Ingredients people check for
Lactose, gluten, dyes, sugars and other ingredients that matter with an allergy, intolerance or diet — as this product’s FDA label lists them.
This label’s list of inactive ingredients names none of: lactose, wheat or gluten, colour dyes, sugars, sugar alcohols, alcohol (ethanol), aspartame (phenylalanine), gelatin, peanut oil, soy, parabens, sulfites, titanium dioxide.
Quoted from the FDA label. A label that does not name an ingredient is not a guarantee that the product is free of it, and formulations change. With an allergy, check the pack and ask a pharmacist.
Every version of this medicine (2)
The same active substance, strength and kind of form, from every company that sells it — with what each label lists.
Showing 2 of 2
Details
| Made by | Shenzhen Xituo Electronics Co., Ltd |
|---|---|
| Active substance | Undecylenic Acid 25% Antifungal Pen |
| Strength | 25 g/100mL |
| Form | Liquid |
| Route | Topical |
| Packs | 3 APPLICATOR in 1 BOX / 3 mL in 1 APPLICATOR |
| NDC | 87273-006 |
Source: NDC Directory · 2026-09-13 · not reviewed by a clinician
Source: US Food and Drug Administration, NDC Directory. Reuse terms: US government work (FDA).
Same active substance
These contain the same substance. That does not mean one can replace another — ask a pharmacist.