<<Disclaimer: Verify this information before applying it to your situation.>>
 
While we're on the subject of medications...Not all potassium preparations
are gluten-free.  When I was first diagnosed the hospital gave me this nice
packet of potassium to mix in water & I got sicker than a dog.  The hospital
pharmacist checked & sure enough, the filler is a mixture of cereal grains.
 I think this is true of most, if not all, of the prescription potassium that
comes in the powder form.  BTW, K- Dur is GF, if any one ever finds they need
a prescription potassium supplement.
Kate in VA