Hold on a moment there amigo, Mucinex D is not expectorant and cough suppressant. The "D" stands for Decongestant, and can be pseudoephedrine or phenylephrine combined with expectorant in an extended release formula. You don't want to be overdosing on decongestant, as it screws with your blood pressure.

I wouldn't want the information on this forum to be cause for someone getting hurt. We gotta check those labels before we post here, and anyone thinking of using OTC medicine should read the label before use, regardless of what is said here.