question: I am 53 yrs old, 5' tall and weight 218 lbs.  The following are meds I take: klor-con m20, hydrochlorothiazide 25mg, singular 10mg and zyrtec. I had an endometrial biopsy three weeks ago.  The doctor asked me if i was allergic to shellfish. (I'm not) She said (I'm guessing) the iodine used contained salmon.  A few days later I developed a rash.  I have been treating it with neosporin.  Helping but not quick enough.  Is there product I can buy over the counter?