Dapsone Medication: Uses, Dosage, Side Effects & Treatment Guide

Summary of Key Points

Dapsone is a prescription medication used to treat a variety of conditions, including leprosy, dermatitis herpetiformis, and certain infections. It works by reducing inflammation and fighting bacteria. Dapsone is available in both oral and topical forms. Like all medications, it may cause side effects, so it’s important to follow your healthcare provider’s instructions closely. If you have any concerns, our telemedicine providers are available to assist you.

Names of Medication

US Brand Name: Aczone

Generic Name: Dapsone

The generic name refers to the active ingredient in the medication, while the brand name is the name given by the manufacturer. In this case, Dapsone is the generic name.

Pharmacologic Category

Sulfonamides

Anti-infective agents

Anti-inflammatory agents

Dapsone Dosage

Dapsone is prescribed for various conditions, with the dosage depending on the specific condition being treated. Always consult your doctor before making any changes to your dose. If you need to speak with a healthcare provider, our telemedicine team is available for consultations.

Dapsone for Leprosy (Hansen’s Disease)

Dosage: 100 mg orally once daily

Duration: Typically 12 months, but this may vary depending on the severity of the disease.

Dapsone for Dermatitis Herpetiformis

Dosage: 50 mg to 300 mg orally once daily

Duration: Long-term treatment, with dose adjustments based on symptom control.

Pneumocystis Pneumonia (PCP) Prophylaxis in HIV Patients

Dosage: 100 mg orally once daily or 50 mg orally twice daily

Duration: As long as the patient remains at risk for PCP.

Non-tuberculous Mycobacterial Infections

Dosage: 100 mg orally once daily

Duration: Varies based on the infection and the patient’s response to treatment.

Dapsone for Malaria (Prophylaxis)

Dosage: 100 mg orally once daily

Duration: Begin 1-2 days before traveling to an endemic area, continue during the stay, and for 4 weeks after leaving the area.

Dapsone for Acne

Dosage: Apply a thin layer of topical Dapsone 5% gel to the affected area twice daily.

Duration: Use as directed by your healthcare provider, typically for several weeks to months.

Tuberculosis (Adjunctive Therapy)

Dosage: 100 mg orally once daily

Duration: Varies depending on the tuberculosis treatment regimen.

Chronic Granulomatous Disease

Dosage: 1-2 mg/kg/day orally (up to 100 mg/day)

Duration: Long-term, based on clinical response.

HIV-Related Infections

Dosage: 100 mg orally once daily

Duration: As long as the patient remains at risk for opportunistic infections.

Erythema Nodosum Leprosum

Dosage: 100 mg orally once daily, may increase to 200 mg/day in severe cases

Duration: Continue until symptoms resolve, which may take several weeks to months.

Dosage Forms and Strengths

Oral Tablets: 25 mg, 100 mg

Topical Gel: 5% gel

Administration Instructions for Dapsone

Dapsone tablets can be taken with or without food, but it’s important to take them at the same time each day. For the topical gel, apply a thin layer to clean, dry skin, avoiding contact with the eyes, mouth, and other mucous membranes. Always follow your healthcare provider’s instructions for dosage and administration. If you have any questions about how to take Dapsone, our telemedicine providers are here to help.

Dapsone Side Effects and Adverse Reactions

Like all medications, Dapsone can cause side effects. Some are common and mild, while others may be more serious. If you experience any side effects, contact your healthcare provider immediately. You can also schedule a telemedicine appointment with us for further guidance.

Common Dapsone Side Effects

Nausea: Feeling nauseous is a common side effect, especially when starting treatment.

Headache: Some patients may experience mild to moderate headaches.

Rash: Skin irritation or rash may occur, particularly with the topical form of Dapsone.

Serious Dapsone Side Effects

Hemolytic Anemia: A condition where red blood cells are destroyed faster than they can be produced. Symptoms include fatigue, pale skin, and shortness of breath.

Methemoglobinemia: A rare but serious condition where the blood cannot carry oxygen effectively. Symptoms include blue or gray skin, dizziness, and shortness of breath.

Severe Skin Reactions: In rare cases, Dapsone can cause severe skin reactions such as Stevens-Johnson syndrome. Seek immediate medical attention if you notice blistering or peeling skin.

Contraindications for Dapsone

A contraindication is a specific condition where a medication should not be used because it could cause harm. If you have any of the conditions listed below, Dapsone may not be safe for you. Always discuss your full medical history with your healthcare provider before starting any new medication.

Severe anemia: Dapsone can reduce red blood cells, worsening anemia. If you already have severe anemia, taking Dapsone could lead to dangerous complications.

Glucose-6-phosphate dehydrogenase (G6PD) deficiency: People with G6PD deficiency are at higher risk of developing hemolytic anemia when taking Dapsone.

Liver disease: Dapsone is processed by the liver. If you have liver disease, your body may not break down the medication properly, leading to higher drug levels and increased side effects.

Severe lung disease: Dapsone can cause methemoglobinemia, impairing oxygen delivery to tissues. This could worsen lung disease or cause breathing difficulties.

Hypersensitivity to Dapsone: If you’ve had an allergic reaction to Dapsone or any of its ingredients, you should not take this medication as it could cause a severe allergic reaction.

Drug to Drug Interactions

Certain medications can interact with Dapsone, potentially increasing side effects or reducing the effectiveness of one or both drugs. It’s important to inform your healthcare provider about all the medications you are taking, including over-the-counter drugs and supplements. Below are some medications that may interact with Dapsone:

1. Trimethoprim-sulfamethoxazole (Bactrim, Septra): This antibiotic may increase the risk of hemolytic anemia when taken with Dapsone.
2. Rifampin (Rifadin, Rimactane): Used to treat tuberculosis, Rifampin can lower Dapsone levels in your blood, reducing its effectiveness.
3. Chloroquine (Aralen): Used to treat malaria, Chloroquine may raise the risk of methemoglobinemia when combined with Dapsone.
4. Probenecid (Benemid): Used to treat gout, Probenecid can increase Dapsone levels in your blood, heightening the risk of side effects.
5. Phenytoin (Dilantin): An anti-seizure medication, Phenytoin can elevate Dapsone levels, potentially leading to toxicity.

Dapsone in Pregnancy

Is it Safe to Take Dapsone When Pregnant?

Dapsone is classified as a Category C medication for pregnancy by the FDA. This means that while no well-controlled studies have been conducted in pregnant women, animal studies have shown some risk to the fetus. Dapsone should only be used during pregnancy if the potential benefits outweigh the risks. If you are pregnant or planning to become pregnant, consult your healthcare provider to determine if Dapsone is the right choice for you. You can also schedule a telemedicine appointment with one of our providers to discuss your options.

Dapsone While Breastfeeding

Is it Safe to Take Dapsone While Breastfeeding?

Dapsone passes into breast milk and may cause hemolytic anemia or other side effects in a breastfeeding infant, especially if the infant has G6PD deficiency. If you are breastfeeding, discuss the risks and benefits of continuing Dapsone treatment with your healthcare provider. They may recommend monitoring your baby for side effects or suggest an alternative treatment. You can consult one of our providers via telemedicine to explore your options.

Estimated Cost of Dapsone Medication

The cost of a 30-day supply of Dapsone (100 mg tablets) without insurance can vary. Using a GoodRx coupon, the price typically ranges from $30 to $60, depending on the pharmacy and location. Check GoodRx or other discount programs for the most up-to-date pricing.

Possible Alternatives to Dapsone

If Dapsone is not suitable for you, or if you are looking for alternative treatments, other medications and lifestyle changes may help manage your condition. Always consult your healthcare provider before making any changes to your treatment plan. You can also schedule a telemedicine appointment with one of our providers to discuss these options in more detail.

1. Leprosy: Alternatives include Rifampin, Clofazimine, and Minocycline. Multidrug therapy (MDT) is the standard treatment. Lifestyle changes, such as maintaining good hygiene and avoiding close contact with untreated individuals, can also help.
2. Dermatitis herpetiformis: A gluten-free diet is often recommended. Medications like Sulfasalazine or Colchicine may be alternatives to Dapsone for dermatitis herpetiformis.
3. Pneumocystis pneumonia (PCP): Trimethoprim-sulfamethoxazole (Bactrim) is often the first-line treatment. Pentamidine or Atovaquone may be used as alternatives in some cases.
4. Non-tuberculous mycobacterial infections: Treatment may include a combination of antibiotics like Clarithromycin, Azithromycin, or Ethambutol. Discuss with your provider which combination is best for you.
5. Malaria: Alternatives include Chloroquine, Mefloquine, or Artemisinin-based combination therapies (ACTs). Preventive measures like using insect repellent and sleeping under mosquito nets are also important.
6. Acne: Topical treatments like Benzoyl Peroxide or Retinoids may be alternatives. Oral antibiotics like Tetracycline or hormonal treatments may also be considered as alternatives to Dapsone for acne.
7. Tuberculosis: Standard treatment includes a combination of Rifampin, Isoniazid, Pyrazinamide, and Ethambutol. Dapsone is not commonly used for tuberculosis, so consult your provider for the best treatment plan.
8. Chronic granulomatous disease: Prophylactic antibiotics like Trimethoprim-sulfamethoxazole and antifungals like Itraconazole are often used. Interferon-gamma therapy may also be considered.
9. HIV-related infections: Antiretroviral therapy (ART) is the cornerstone of HIV treatment. For infections like PCP, Bactrim is often used. Discuss with your provider which medications are best for your situation.
10. Erythema nodosum leprosum: Thalidomide is often used to treat this condition. Corticosteroids like Prednisone may also be considered as an alternative to Dapsone.

Recent Updates on Dapsone Research

Recent studies have explored the potential of Dapsone in treating other inflammatory skin conditions beyond its traditional uses. For example, research is ongoing into its effectiveness in treating hidradenitis suppurativa, a chronic skin disease that causes painful lumps under the skin. Additionally, there is growing interest in the anti-inflammatory properties of Dapsone for autoimmune diseases. However, more clinical trials are needed to confirm these findings. If you are interested in learning more about these developments, consult your healthcare provider or schedule a telemedicine appointment with one of our providers to discuss whether Dapsone may be appropriate for your condition.

James Kingsley

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