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Leucodinine B (Mequinol 10% ointment)

Leucodinine B (Mequinol 10% ointment)


Uses of Leucodinine B (mequinol)

Leucodinine B is commonly used for the treatment of hyperpigmentation, such as melasma, post-inflammatory, or chemical melanosis.

Leucodinine B

How should I take Leucodinine B (mequinol)?

Leucodinine B

This drug should only be applied to the skin. Avoid contact with the eyes. Wash your hands after using this product.

How do I store Leucodinine B (mequinol)?

Store at room temperature, away from moisture and direct sunlight. To prevent drug damage, you should not store it in the bathroom or the freezer. There may be different brands of this drug that may have different storage needs. Therefore, it is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush it down the toilet or pour them into a drain unless instructed to do so. Additionally, do not use it if expired. Consult your pharmacist for more details about how to safely discard your product.

Precautions & Warnings

What should I know before using Leucodinine B (mequinol)?

This drug is contraindicated in case of:

  • Hypersensitivity to any ingredients
  • Children under 12 years

Before using this drug,

  • Avoid sun exposure of hyperpigmented areas. (e.g. wear long sleeves and pants, use an umbrella)
  • Use sunblock before sun exposure.
  • Avoid contact with eyes and mucous membranes

Is it safe during pregnancy or breastfeeding?


During pregnancy, no fetal malformation or toxicity has been reported to date. However, please always consult with your doctor to weigh the potential benefits and risks before using this drug.


In the absence of data, the use of this medicinal product should be avoided during lactation.

Side Effects

Possible side effects of Leucodinine B (mequinol)

Some side effects may occur when using this drug, such as irritation, hypersensitivity reactions (rare) or risk of post-inflammatory hypermelanosis (darkening).

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side effect, please consult your doctor or pharmacist.


What drugs may interact with Leucodinine B (mequinol)?

This drug may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects.

To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist.

For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Does food or alcohol interact with Leucodinine B (mequinol)?

As a topical product, there are no likely food or drug interactions. However, discuss with your doctor or pharmacist regarding any potential food or alcohol interactions before using this drug.

Health conditions that may interact with Leucodinine B (mequinol)

Leucodinine B may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.


The information provided is not a substitute for any medical advice. You should ALWAYS consult your doctor or pharmacist before using this drug.

What is the dose for an adult?

The recommended dose is 2 applications per day, once in the morning and once in the evening.

What is the dose for a child?

There is no established pediatric dose. It may be unsafe for your child. Therefore, it is always important to consult with your doctor or pharmacist for more information.

How is Leucodinine B (mequinol) available?

Leucodinine B is available in the following dosage forms and strengths:

  • Ointment containing mequinol 10% (w/w)

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.


BMI Calculator

Use this calculator to check your body mass index (BMI) and find out if you're at a healthy weight. You can also use this tool to check your child's BMI.



Hello Health Group does not provide medical advice, diagnosis or treatment.

MEDICATION: LEUCODININE B. http://www.medicatione.com/?c=drug&s=leucodinine%20b&ingredient=mequinol. Accessed November 19, 2016 LEUCODININE B 10%. http://www.db-pharma.com/fiche-uk.cfm?id=13. Accessed November 19, 2016.
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Written by Stephanie Nera, RPh, PharmD Updated Jan 23, 2021
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