Now remember, I cannot give you personal recommendations on how to treat your illness. But in general, with severe dry eyes you want to avoid the ingredients of diphenhydramine (benadryl) or phenyephrine/pseudophedrine (sudafed), brompheniramine (bromfed) because they will worsen your dry eyes. Basically its the decongestants that can worsen dry eyes and blood pressure and the antihistamines that will worsen dry eyes. You may be able to use a once a day antihistamine like claritin or zyrtec which have fewer systemic side effects. Also guifenasin (robitussin or mucinex)which loosens the secrections in throat and chest can be helpful with colds without affecting dry eyes so much. Just some general comments - discuss situation with your doctor to see of claritin and mucinex might be something that you could possibly take without affecting dry eyes too much.
Thanks--Will try next time.