Yall what's a good med for coughing, sneezing, stuffy nose & congestion? My kids started with a…

Yall what's a good med for coughing, sneezing, stuffy nose & congestion? My kids started with a cough so ive given them bromphed and have the humidifier going for a week now and they've just gotten progressively worse. Ive caught onto it and have a headache, sore throat and stuffy nose. And they don't really tell me what hurts, so idk if all that's what's wrong with them.