Table of contents:
- What is Formalin
- Warning Before Using Formalin
- Dosage and Rules for Use of Formalin
- How to Use Formalin Correctly
- Formalin Interaction with Other Drugs
- Side Effects and Dangers of Formalin

Formaldehyde or formalin is a drug that can be used in the treatment of skin warts. Formalin is also often known as a preservative
Warts are a skin disease caused by infection with the human papillomavirus (HPV). Formalin works by inhibiting abnormal skin growth and killing the virus that causes warts.

In addition to treating warts, formalin can also be used to treat the smell of sweat or excessive sweating on the feet.
Formalin trademark: -
What is Formalin
Class | Prescription drugs |
Categories | Ointment medicine |
Benefits | Overcoming warts, smelly sweat, excessive sweating on the feet, and as a preservative |
Used by | Adult |
Formalin for pregnant and lactating women | Category C: Animal studies have shown adverse effects on the fetus, but there are no controlled studies in pregnant women.
Drugs should only be used if the expected benefit outweighs the risk to the fetus It is not known whether formalin can be absorbed into breast milk or not. Do not use this medicine without a doctor's advice. |
Medicine form | Ointment medicine |
Warning Before Using Formalin
Before using formalin, you need to pay attention to the following points:
- Do not use formalin if you are allergic to this drug. Tell your doctor about your history of allergies.
- Tell your doctor if you are taking certain medications, supplements or herbal products.
- Tell your doctor if you are pregnant, planning to become pregnant, or are breastfeeding.
- See your doctor immediately if you experience an allergic reaction to the drug or an overdose after using formalin.
Dosage and Rules for Use of Formalin
The general dose of using formalin as a topical medication is once a day. This drug is used by means of a thin layer of the skin overgrown with warts or other areas that want to be treated. Please note, this medicine can only be used according to a doctor's prescription.
How to Use Formalin Correctly
Follow the doctor's advice and read the information listed on the drug packaging label before using formalin. Do not reduce or increase the dose without consulting your doctor first.
Wash your hands before and after using formalin. If you are going to apply the medicine on the skin of your hands, do not wash your hands after applying the medicine.
Before applying formalin, wash and dry the skin to be smeared. Do not apply the medicine with your fingers. Use the dabbing tool provided or a cotton bud to apply the medicine to the wart.
Formalin is an external medicine that is used for the skin. Avoid applying formalin to the face, especially the area around the eyes, nose and mouth.
Store formalin in a dry place and avoid direct sunlight. Keep this medicine out of reach of children.
Formalin Interaction with Other Drugs
The use of formalin can reduce the effectiveness of antimicrobial drugs. In addition, taking formalin with disulfiram or calcium carbimide can also increase the risk of side effects.
To be safe, always consult with your doctor about any medications, supplements, or herbal products you are currently using.
Side Effects and Dangers of Formalin
The following are some of the possible side effects after using formalin:
- Redness or irritation of the skin
- Hardening of the skin
- Changes in the color of the smeared skin to be lighter than the surrounding area
- Contact dermatitis, which can be characterized by an itchy rash on the smeared area
Consult a doctor if these side effects do not subside or get worse. You should also see a doctor immediately if you experience an allergic reaction to medication after using this drug.