1mg, best e pharmacy in India




Dapsone is mainly used to treat leprosy (infectious disease causing skin sores, nerve damage, and muscle weakness). It is also used to treat skin diseases like acne (pimples) and dermatitis herpetiformis (chronic autoimmune skin condition characterized by blisters with watery fluid, all over the body), to prevent malaria (along with pyrimethamine) and opportunistic infections especially pneumonia associated with AIDS (acquired immunodeficiency syndrome).

How it works

Dapsone slows the bacterial growth by preventing folic acid synthesis in susceptible organisms.

Common side effects

Nausea, Increased sensitivity to light, Itchy rash, Liver inflammation, Liver function abnormal, Anemia, Dapsone syndrome, Headache, Insomnia, Jaundice, Loss of appetite, Tachycardia, Nerve injury, Tingling sensation of extremity, Vomiting


Expert advice

  • Dapsone should be used with caution in patients with heart or lung disease.
  • Regular blood counts should be performed during treatment with dapsone to check incidence of hemolysis (breakdown of red blood cells).
  • If you are pregnant or planning to become pregnant, but suffering from leprosy, your doctor may prescribe you folic acid supplements along with dapsone.

Frequently asked questions


Q. Is dapsone a steroid, retinoid, immunosuppressant or sulfa drug?
Dapsone is a sulfa drug used mainly to treat leprosy.
Q. Is dapsone available over the counter?
No. Dapsone belongs to schedule H category of drugs and it is available only on valid prescription.
Q. Does dapsone cause itching, tiredness, weight gain, weight loss, hair loss or yeast infections?
Dapsone may cause itching, tiredness, and loss of appetite. It is not reported to cause weight gain or loss, hair loss or yeast infections. Consult your doctor if you experience such side effects.
Q. Does dapsone topical work?
Dapsone gel is used topically for the treatment of acne (pimples).

Content on this page was last updated on 30 September, 2016, by Dr. Varun Gupta (MD Pharmacology)