Is it safe to take Robitussin Cough + Chest Congestion DM while on Lexapro, (escitalopram) Synthroid, Zyrtec, Dymista Nasal Spray & Albuterol nebulizer?

Many meds. At your age (or anyone else for that matter) taking five medicines and wanting another one is not smart unless your doctor has told what medical problems you have. Having said that, if your doctor did prescribe those meds, over time the meds should be reduced. Please let me know what develops.