I also have a friend with lupus and I spoke to Mrs Chang the owner of Sensible Health and she said it is highly recommended for someone with lupus to flush. Donīt know about your friendīs other symptoms, but about the lupus I am sure she/he should flush as cleansing the liver helps with all self destructive illnesses such as allergies, arthritis, lupus etc,
Go to her web page, many of the problems youīve mentioned she describes in her article,(thyroid probles for example) maybe you can print and show yr frined.
And about the other symptoms, why donīt you give Mrs Chang a call. I do that from time to time to sort out my doubts.
Her phone is 1 416 248 2930