During my last holiday, my daughter passed her illness to me then I end up coughing for more than 3 weeks. I tried robitussin red, woods all no use, keep coughing all the time. They only gave very short relief but after a while the cough come back.
So recently I tried the Huiji Herbalmint Cough Syrup now I feel so much better. Last time the robitussin works but now not effective anymore.
I think if kena cough, good to buy different types of cough syrup, if one don't work try another one.