Prescription required. Product of Canada. Shipped from Canada.
To comply with Canadian International Pharmacy Association regulations you are permitted to order a 3-month supply or the closest package size available based on your personal prescription. read more
- Gently wash the affected skin and pat dry with a soft towel. Ask your doctor or pharmacist to recommend a gentle cleanser.
- If you are using the 5% gel product, use your fingers to spread a pea-sized amount as a thin layer of gel over the affected area. If you are using the 7.5% gel product, use your fingers to spread a pea-sized amount as a thin layer of gel over the face and any other affected areas.
- Rub the gel in gently and completely. It may feel gritty and you may see particles in the gel.
- Put the cap back on the gel tube and close it tightly.
- Wash your hands immediately after applying the gel.
Before using dapsone,
- tell your doctor and pharmacist if you are allergic to dapsone, sulfonamide-derived medications ('sulfa drugs'), or any of the ingredients in dapsone gel. Ask your pharmacist for a list of the ingredients.
- tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: acetaminophen; anticonvulsant medications such as phenytoin (Dilantin, Phenytek); antimalarial medications such as chloroquine (Aralen), primaquine, and quinine (Qualaquin); dapsone (by mouth); nitrofurantoin (Furadantin); nitroglycerin (Minitran, Nitro-Dur, Nitromist, others); phenobarbital; pyrimethamine (Daraprim); rifampin (Rifadin, Rimactane; in Rifamate, in Rifater); or sulfonamide-containing medications including co-trimoxazole (Bactrim, Septra). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
- tell your doctor what herbal products you are taking, especially St. John's wort.
- tell your doctor if you have or have ever had hemolytic anemia (a condition with an abnormally low number of red blood cells), glucose-6-phosphate dehydrogenase (G-6PD) deficiency (an inherited blood disorder), or methemoglobinemia (a condition with defective red blood cells that are unable to carry oxygen to the tissues in the body).
- tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while using dapsone, call your doctor. Tell your doctor if you are breast-feeding.
- if you are having surgery, including dental surgery, tell the doctor or dentist that you are using dapsone.
- tell your doctor if you use topical products containing benzoyl peroxide (in Duac, in Onexton; found in many topical acne products). Using benzoyl peroxide products with dapsone gel may cause your skin or facial hair to turn yellow or orange temporarily.
- skin redness or burning
- skin drying
- skin oiliness and peeling
- numbness, burning or tingling in the hands or feet
- muscle weakness
- grey-bluish color of lips, nails, or inside of mouth
- back pain
- shortness of breath
- dark brown urine
- yellow or pale skin
The content on this page is for informational and educational purposes only and does not constitute professional medical advice. Patients should not use the information presented on this page for diagnosing a health-related issue or disease. Before taking any medication or supplements, patients should always consult a physician or qualified healthcare professional for medical advice or information about whether a drug is safe, appropriate or effective.