I think you're thinking of Quantum, and (possibly, seeing as they're glowing) Quartz and Victory. I checked the Fallout wiki and Nuka-Cola doesn't have radioactive ingredients. The Nuka-Colas are radioactive for the same reason most of the pre-war food (save for, for some odd reason, Sunset Sarsaparilla) is, because they've survived a nuclear war and were exposed to radiation for 200+ years (which, along side God knows how many preservatives, is also why the food is still technically edible even after all this time)
The only edible pre-war food in FO1 and FO2 is Nuka-Cola (maybe also that cookie). There are Boxes of Noodles but they serve no purpose other than to barter. I find it weird that JSawyer mod added expired Stimpaks and homemade Stimpaks (with perception penalties) but did fixed how Nuka-Cola or even homemade Nuka-Cola had rads.
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See for yourself:
http://fallout.wikia.com/wiki/Nuka-Cola