Lamprene (Clofazamine)

Prescription Required
Generic
Dose Size & Price Qty
50mg
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Fact Table

Fact Table
Formula C27H22Cl2N4
License FDA approved (1986); WHO essential medicine
Bioavailability Variable; increased with food (oral)
Legal status Prescription only (Rx); restricted use in some countries
Chemical Name 3-(p-chloroanilino)-10-(p-chlorophenyl)-2,10-dihydro-2-(isopropylimino)phenazine
Elimination half-life ~70 days (very long due to tissue accumulation)
Dosage (Strength) 50 mg and 100 mg oral capsules; dosing varies by indication (e.g., leprosy regimens)
Pregnancy Category C – Use only if potential benefit justifies risk
Brands Lamprene
Protein binding ~99%
PubChem CID 2794
MedlinePlus a682467
ChEBI 3756
ATC code J04BA01
DrugBank DB00845
KEGG D00248
Routes of administration By mouth (oral capsules)

Lamprene (clofazimine) is a drug used to treat leprosy (Hansen’s disease). It is usually taken along with rifampicin and dapsone to treat more severe cases of leprosy, and it is especially useful when the bacteria no longer respond well to dapsone or for managing a painful inflammatory reaction called erythema nodosum leprosum. While it helps control the bacteria that cause leprosy, how it works isn’t fully understood. Clofazimine is a red-colored compound, which explains the drug’s bright red appearance.

Directions

Lamprene is typically taken by mouth with meals as part of a combination treatment. The standard dosages are as follows but should always be prescribed by a healthcare provider.

  • Dapsone-sensitive lepromatous leprosy: Take 100 mg once daily with food, together with other leprosy medicines, for at least 2 years.
  • Dapsone-resistant lepromatous leprosy: Take 100 mg once daily with food, along with one or more other medications, for about 3 years.
  • Lepromatous leprosy with erythema nodosum leprosum: Take 100 to 200 mg daily for up to 3 months, then reduce the dose to 100 mg per day as soon as possible, as directed by a doctor.

Ingredients

The active ingredient in Lamprene is clofazimine.

Cautions

  • Before using this medication, you may want to consult a healthcare provider about the following:
    • Any existing health conditions
    • Any allergies
    • A list of all medications currently being taken
  • Lamprene can build up in the digestive tract and other organs over time, which may cause serious bowel problems such as intestinal blockage, bleeding, or, in rare cases, death.
  • Higher daily doses should only be used for short periods and under close medical supervision to reduce the risk of serious gastrointestinal problems.
  • Lamprene may affect the heart's electrical rhythm and cause a dangerous heart rhythm problem, especially at higher doses or when combined with certain other medications. Heart monitoring may be needed during treatment, and the medication may be stopped if serious rhythm changes or fainting occur.
  • Most people taking Lamprene develop skin color changes ranging from orange-pink to dark brown or black, and body fluids like sweat, tears, urine, and stool may also change color. Skin discoloration is expected and may take months or even years to fade after treatment ends.

Contraindications

Avoid taking or using this medication if any of the following apply:

  • Known hypersensitivity to clofazimine
  • Allergic reaction to any other ingredients in Lamprene

Side Effects

Common side effects of Lamprene include:

  • Skin discoloration (pink to brownish-black)
  • Dry skin or scaling
  • Abdominal pain or stomach discomfort
  • Nausea and vomiting
  • Diarrhea
  • Discoloration of body fluids (urine, sweat, and sputum)

More serious side effects are less common but can include bowel obstruction, gastrointestinal bleeding, heart rhythm changes (QT prolongation), and eye problems such as vision changes or retinal damage. Mood changes, including depression related to skin discoloration, have also been reported. Contact a healthcare provider immediately if you develop severe abdominal pain, persistent vomiting, vision changes, irregular heartbeat, or severe mood changes.

Frequently Asked Questions about Lamprene


What is Lamprene used for?

Lamprene is an antimicrobial medication primarily used as part of combination therapy for leprosy, also known as Hansen’s disease. It helps control the infection caused by Mycobacterium leprae.


How does Lamprene work?

Lamprene works by inhibiting the growth of bacteria and reducing inflammation. Its exact mechanism is not fully understood, but it interferes with bacterial DNA and helps suppress immune-related complications of leprosy.


How is Lamprene typically taken?

Lamprene is taken by mouth, usually once daily or as directed, often in combination with other anti-leprosy medications. It is commonly taken with food to improve absorption and reduce stomach upset.


How long is Lamprene treatment usually required?

Treatment duration is typically long-term and may last several months to years, depending on the type and severity of leprosy and the overall treatment regimen.


What are the most common side effects of Lamprene?

Common side effects include skin discoloration ranging from red to brownish-black, dry skin, itching, and gastrointestinal symptoms such as abdominal pain or diarrhea.


Can Lamprene cause permanent skin discoloration?

Skin discoloration is common and may take months or years to fade after stopping treatment. In some cases, changes in skin color can be long-lasting.


Does Lamprene affect the digestive system?

Lamprene can cause stomach pain, nausea, vomiting, or diarrhea. Rarely, long-term use may lead to more serious gastrointestinal complications.


Can Lamprene affect mental health?

Mood changes, including depression or anxiety, have been reported in some individuals. Any significant changes in mood or behavior should be evaluated promptly.


Are regular tests needed while taking Lamprene?

Long-term therapy may involve monitoring for gastrointestinal symptoms and overall treatment response. Additional monitoring may be required depending on the treatment plan.


Is Lamprene safe during pregnancy or breastfeeding?

Lamprene use during pregnancy or breastfeeding requires careful consideration. The medication can cross the placenta and is present in breast milk, so use is generally based on weighing potential benefits against possible risks.

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