Why does my acid reflux seem to get worse when I have a cold? Do any common cold medicines reduce the effects of omeprazole?

Meds,post nasal drip. When sick w an upper respiratory tract infection,post nasal drip can be irritating to the throat, esophagus&stomach.Many common cold meds contain NSAIDS(anti-inflammatories)eg.ibuprofen or naproxen,, which can irritate the esophagus.Spending more time in bed does not help acid reflux, either.Gaviscon(or"compare with Gaviscon"generic)after meals& at bedtime can boost protective effect of omeprazole.