Can sulfur ointment be used by pregnant women? Sulfur ointment is not a prohibited drug for pregnant women, but any drug has some toxicity and pregnant women need to use such drugs with caution to avoid some effects on the fetus. Sulfur ointment is mainly used to treat ringworm, acne, seborrheic dermatitis, rosacea, chronic eczema, etc. Some patients may experience some itching, burning and discomfort when applying this drug, therefore, patients who are allergic to this drug should be prohibited. Patients who are allergic to this drug should also use it with caution. In addition, if children want to apply this drug, they need to consult a doctor in advance to see if it is okay to use it. Avoid contact with the eyes or other mucous membranes when applying this drug. If there is a burning sensation or redness or swelling at the site of application, the drug should be stopped immediately and flushed with water, and if necessary, go to the hospital promptly.