Anxiety, neck pain, glands and respiratory problems

The best person to ask is your practitioner who is most familiar with your overall health. But generally speaking, yes, you can often combine simple allergy formulas with most for anxiety. Cold and flu related formulas, however, are generally best taken alone and then as the issues pass you can go back on your other formulas.

While there is clearly very little to go on, I would make certain you have your thyroid checked out as well from what you are describing.