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Wendy,  I have used Cocoa Pebbles (one package) for variety,
had no obvious problem but I will not repeat them but I will
try Fruity Pebbles and see what they taste like. Post claims
them both to be GF. My favorite is Sun Flakes and in cool
weather I like Grits or Cream of Rice with syrup. I use Corn
Pops as an occasional change of taste and texture. Bob in FL