I'm nervous to take any type of cold medicines with this cocktail. I tend to just stay in bed and ride out the cold. All the cold meds really do is mask the symptoms so you can go about your day.
However, my previous pdoc would prescribe Vistaril for anxiety and/or sleep. I believe that is technically an antihistamine and I never had any issues with it. Not sure with the differences are chemically between each drug, but I never had a reaction with it.
Either way, I hope you are able to find some relief with you allergies. They can be absolutely horrible, so I feel your pain! Take care: