Skip to Content


Active substance(s): DAPSONE

View full screen / Print PDF » Download PDF ⇩
Read all of this leaflet carefully before you start taking this medicine because it
contains important information for you.
• Keep this leaflet. You may need to read it again.
• If you have any further questions, ask your doctor or pharmacist.
• This medicine has been prescribed for you only. Do not pass it on to others. It may
harm them, even if their signs of illness are the same as yours.
• If you get any side effects, talk to your doctor or pharmacist. This includes any
possible side effects not listed in this leaflet.

In this leaflet:
1. What DAPSONE is and what it is used for
2. What you need to know before you take DAPSONE Tablets
3. How to take DAPSONE Tablets
4. Possible side effects
5. How to store DAPSONE Tablets
6. Contents of the pack and other information
1. What DAPSONE is and what it is used for
Dapsone belongs to a group of medicines called antibacteri-als. It works by stopping
the production of folic acid in certain bacteria, therefore stopping them growing.
Dapsone may be used for:
• leprosy
• skin problems
• the prevention of malaria in combination with pyrimethamine
• the prevention of pneumonia in immunodeficient patients, especially in AIDS
2. What you need to know before you take DAPSONE Tabletst you need to know before
you take DAPSONE Tablets3

Do not take DAPSONE tablets and tell your doctor if you:
• are allergic (hypersensitive) to Dapsone, any of the other ingredients in the tablet, or
to similar medicines such as sulphonamide or sulphone (see section 6). An allergic
reaction may include a rash, itching, difficulty breathing or swelling of the face, lips,
throat or tongue
• suffer from severe anaemia
• have porphyria (a genetic or inherited disorder of the red blood pigment,
• suffer from severe glucose-6-phosphate dehydrogenase (G6PD) deficiency
(including breast feeding of affected children), this can cause episodes of anaemia
after eating certain foods such as fava beans (favism).
Take special care with Dapsone tablets and tell your doctor if:
• suffer from other blood disorders.• suffer from heart or lung disease.
• suffer from glucose-6-phosphate dehydrogenase (G6PD) deficiency.

If you are not sure if any of the above applies to you, talk to your doctor or pharmacist
before taking this medicine.
Taking other medicines
Please tell your doctor or pharmacist if you are taking or have recently taken any other
medicines, including medicines obtained without a prescription.
In particular, tell your doctor or pharmacist if you are taking any of the following
• probenecid (to treat gout)
• rifampicin or trimethoprim (antibiotics to treat infections).
If you are unsure of the types of medicines you are taking, ask your doctor or
Pregnancy and breast feeding
If you are pregnant or planning to become pregnant, your doctor may prescribe you
folic acid supplements.
Dapsone can be present in breast milk. There has been a report of anaemia in an infant
being breast fed by a mother taking Dapsone tablets.
If you are concerned, check with your doctor or pharmacist.
Ask your doctor or pharmacist for advice before taking any medicines.
Driving and using machines
You should be able to drive and use machinery whilst taking Dapsone tablets.
Important information about some of the ingredients of DAPSONE
This product contains lactose. If you have been told by your doctor that you have an
intolerance to some sugars, please contact your doctor before taking this medicinal
3. How to take DAPSONE Tablets
Always take this medicine exactly as your doctor or pharmacist has told you. You
should check with them if you are not sure.
Swallow the tablets with some water.
The usual doses are:
Adults and children over 12 years:
• Multibacillary leprosy: 100mg daily for at least two years.
• Paucibacillary leprosy: 100mg daily for at least six months.
• Malaria prophylaxis: 100mg weekly with 12.5mg pyrimethamine.
• Dermatitis herpetiformis: Initially 50mg daily which may be gradually increased to
300mg daily and then reduced to a usual maintenance dose of 25mg-50mg daily.
• Pneumocystis carinii pneumonia: In combination with trimethoprim, 50-100mg
daily or 100mg twice weekly or 200mg once weekly.
If you have a damaged liver your doctor may give you a lower dose.

Children 6-12 years:
• Multibacillary leprosy: 50mg daily for at least two years.
• Paucibacillary leprosy: 50mg daily for at least six months.
Continue to take them for as long as your doctor tells you to, it may be dangerous to
stop without their advice.
If you take more DAPSONE than you should:
If you (or someone else) swallow a lot of tablets at the same time, or you think a child
may have swallowed any, contact your nearest hospital casualty department or tell
your doctor immediately.
If you forget to take DAPSONE:
Do not take a double dose to make up for a forgotten dose. If you forget to take a dose
take it as soon as you remember it and then take the next dose at the right time.
If you have any further questions on the use of this product, ask your doctor or
4. Possible side effects
Like all medicines, Dapsone tablets can cause side effects, particularly when you first
start taking it, although not everybody gets them.
Please tell your doctor or pharmacist if you notice any of the following effects or any
effects not listed.
Contact your doctor at once if the following occur:
• Dapsone syndrome: a ‘Dapsone syndrome’ may occur after 3-6 weeks of treatment.
Symptoms always include rash, fever and changes in blood cells. It is important to
seek medical help immediately as severe skin reactions, inflammation of the liver,
kidney damage and mental illness have occurred if treatment is not stopped or
reduced. Some deaths have been reported.
• Effects on your leprosy: if you are being treated for leprosy and your condition
does not improve or you get eye or nerve damage, talk to your doctor.
Tell your doctor if you notice any of the following side effects or notice any other
effects not listed:
• Effects on the blood: anaemia caused by destruction of red blood cells, changes in
the type and number of other blood cells (you may develop ulcers in your mouth or on
your skin).
• Effects on the skin: rash which can be raised, discoloured, tender, destructive or
itchy, sensitivity to sunlight or artificial light such as sun-bed (symptoms such as
tingling, burning or redness of the skin). Rarely skin conditions may be associated
with fever, malaise, and lung or kidney damage.
• Effects on the nervous system: headache, difficulty sleeping, nerve damage which
may cause tingling in your arms or legs and some weakness.
• Effects on the gastrointestinal system: loss of appetite, feeling or being sick,
inflammation of the liver.
• Other effects: fast heartbeat, mental disturbances, changes in liver function tests,

Reporting of side effects
If you get any side effects, talk to your doctor or pharmacist. This includes any
possible side effects not listed in this leaflet. You can also report side effects directly
via the Yellow Card Scheme (Tel: Freephone 0808 100 3352 or Website: By reporting side effects you can help provide more
information on the safety of this medicine.
5. How to store DAPSONE Tablets
Keep all medicines out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the carton and blister
as [EXP MM/YYYY]. The expiry date refers to the last day of that month.
Keep the tablets in the original package in order to protect from light.
Medicines should not be disposed of via wastewater or household waste. Ask your
pharmacist how to dispose of medicines no longer required. These measures will help
to protect the environment.
6. Contents of the pack and other information
What DAPSONE contains:
The active substance (the ingredient that makes the tablets work) is dapsone. Each
tablet contains 50 mg of the active ingredient.
The tablets also contain lactose monohydrate, pregelatinised maize starch, maize
starch, sodium lauryl sulfate, stearic acid and magnesium stearate.
What DAPSONE looks like and contents of the pack:
Dapsone 50 mg Tablets are white, circular, biconvex tablets, debossed with ‘50’ on
one side and with a score line between ‘D’ & ‘P’ on the other side.
Dapsone tablets are available in boxes of 28 tablets.
Marketing authorisation holder: YJB Port Limited, Unit 32 Stadium Business
Centre, North End Road, Wembley, Middlesex, HA9 0AT
Tiofarma B.V.
Benjamin Franklinstraat 5-9
3261 LW Oud-Beijerland
The Netherlands
This leaflet was last revised in April 2016.

Expand view ⇕

Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.