Known as: DEXTROMETHORPHAN HYDROBROMIDE 10 mg in 5 mL / GUAIFENESIN 100 mg in 5 mL ORAL SOLUTION [Robitussin Peak Cold Sugar-Free Cough Plus Chest Congestion DM], Robitussin Peak Cold Cough Plus Chest Congestion DM Liquid (dextromethorphan hydrobromide 10 MG / guaiFENesin 100 MG) per 5 ML Oral Solution, dextromethorphan hydrobromide 2 mg in 1 mL / guaifenesin 20 mg in 1 mL ORAL LIQUID [ROBITUSSIN TO GO COUGH AND CHEST CONGESTION DM]