Stains From Medication?

Does anyone know how or what to use to remove reddish-orange stains resulting from Uristat, AZO and other products used for UTI's and/or bladder infections? Some of the tiny tablets had come out of their packaging in my hand bag and now everything is reddish-orange, including the lining of my bag. Even my hands are stained and nothing seems to be helping. Any advice with this, other than do not get any more bladder infections in the first place?