Medication Information Leaflet
Dapsone is an antibiotic which also has an anti-inflammatory effect and is used to treat a variety of skin conditions.
Take each dose with a full glass of water.
This medication should be taken with or after food.
It is important to take dapsone regularly to get the most benefit.
If you forget to take a dose, take it as soon as you remember. Then take your next dose at the usual time. Do not take two doses to make up for the missed dose.
Inform your healthcare professional if:
You are allergic to this medication or sulfonamides.
You are pregnant, planning to become pregnant, or breastfeeding.
You have heart, lung, liver, or kidney disease; blood disorders; glucose-6-phosphate dehydrogenase (G6PD) deficiency.
Certain side effects of this medication are not unusual and may even disappear during treatment. If any of the following effects persist or are severe, consult your doctor.
Loss of appetite
The most common main side effect of this medication is haemolytic anemia. Your doctor will do regular monitoring of your blood counts.
The symptoms of a drug allergy include one or more of the following:
Difficulty in breathing
Itchy skin rashes on your body
Rashes (developing during the first two to eight weeks after starting the medication) with fever
If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.
The occurrence of some serious side-effects can range from common to rare. Consult your doctor as soon as possible if you have any of the following:
Tingling of the hands or feet
Ringing in the ears
Fever, sore throat, mouth sores
Bluish skin color
Dark urine or light coloured stools, nausea, vomiting, loss of appetite, stomach pain, yellowing of your eyes or skin
Inform your doctor if you are taking any other medications such as pyrimethamine, supplements, traditional medications and herbal remedies.
Store in a cool and dry place, away from direct sunlight. Keep this medication away from children.
Pack this medication into a black trash bag and seal it tightly before throwing into the rubbish chute or bin.
If you take more than the recommended dose, please seek medical advice immediately. The information provided on this page does not replace information from your healthcare professional. Please consult your healthcare professional for more information.
This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (National Healthcare Group, National University Health System and SingHealth), community pharmacies (Guardian, Unity and Watsons) and Pharmaceutical Society of Singapore. The content does not reflect drug availability and supply information in pharmacies and healthcare institutions. You are advised to check with the respective institutions for such information.
Last updated on March 2021
This article was last reviewed on
Friday, September 15, 2023
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