<<Disclaimer: Verify this information before applying it to your situation.>>
FYI -
I just got off the phone with Perrigo Pharmaceuticals they manufacturer
store-brand over-the-counter medications. I confirmed with them that
the "Suphedrine" (their version of Sudafed) is gluten-free. The one I
had they manufactured for Phar-Mor, a discount pharmacy chain out of
Ohio. I got the medication at one in Florida.
I've heard Claritin D is not gf, but regular Claritin is. So I'm going
back to taking the antihistamine/decongestant separately to control my
allergies.
I hope this helps.