Codeine (codeine phosphate) contains the active ingredient codeine and is used to reduce pain from headache, the flu and common cold. See here for more information and to order.
A: Mucinex contains the active ingredient guaifenesin, which is an expectorant that helps loosen phlegm and thin bronchial secretions. Mucinex does not have rapid heart rate as a possible side effect. There is a product called Mucinex-D that contains pseudoephedrine, and this ingredient can increase heart rate.
Robitussin, Mucinex, Triaminic Expectorant, and Vicks Nyquil are not known to be harmful, but watch for infant drowsiness. Expectorants like Guaifenesin(the main ingredient in Mucinex, Robitussin, Benylin) donât suppress coughs. They loosen up the mucus in the respiratory tract to make it easier to cough up.