Is Flour sulphur Safe in Breastfeeding

I am a breastfeeding mother and i want to know if it is safe to use Flour sulphur? Is Flour sulphur safe for nursing mother and child? Does Flour sulphur extracts into breast milk? Does Flour sulphur has any long term or short term side effects on infants? Can Flour sulphur influence milk supply or can Flour sulphur decrease milk supply in lactating mothers?

Flour sulphur 5% to 10% in a petrolatum base is safe for topical use in children, including infants under 2 months of age.[1] This makes it a useful alternative to organic insecticides for treating scabies in nursing mothers; however, the petrolatum base makes undesirable for use on the breast.