> Other nonprescription drugs like guaifenesin (sold in Mucinex and Robitussin), dextromethorphan (sold in Robitussin DM), and antihistamines for a cold like chlorpheniramine likely don't help with coughs and colds.
I knew about phenylephrine, but is there specifically evidence against these other drugs?
> Other nonprescription drugs like guaifenesin (sold in Mucinex and Robitussin), dextromethorphan (sold in Robitussin DM), and antihistamines for a cold like chlorpheniramine likely don't help with coughs and colds.
I knew about phenylephrine, but is there specifically evidence against these other drugs?