If topical permethrin has not cleared the infection, the standard oral prescription medication is oral ivermectin. It is typically taken as a single dose, followed by a second dose 7 to 14 days later to target any newly hatched mites. Please don't worry if you are still itching; it is very common for itching to persist for up to four weeks after the mites are successfully killed as your skin heals. I recommend consulting your doctor so they can confirm if active mites are still present and provide the appropriate prescription and dosage for you.