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Mumsnet hasn't checked the qualifications of anyone posting here. If you have medical concerns, please seek medical attention; if you think your problem could be acute, do so immediately. Even qualified doctors can't diagnose over the internet, so do bear that in mind when seeking or giving advice.
Read the brilliant book, whose name escapes me about alternative/complementary medicine. that will answer all your questions. For what it's worth, I'd use it as a sink scourer, there's bound to be some sort of grit in it. Should clarify by saying I'm pretty trolled due to drive to france and smuggling much meat and alcohol back to switzerland.