I took cheratussin ac at 10 pm.Learn about Cheratussin AC (Robitussin AC). Tylenol pm AND cheratussin ac 772 medications are known to interact with Cheratussin AC. Learn about the prescription medication Robitussin Ac (Guaifenesin and Codeine), drug uses, dosage, side effects. Last reviewed on RxList: Motrin/Robitussin Can the Interaction of Motrin and Robitussin cause heart attacks in children? View drug interactions between Robitussin-AC and Tylenol. Robitussin-AC is in the drug class upper respiratory combinations. Robitussin-AC is used to treat Cough. GoodRx Learn about Cheratussin AC (Robitussin AC dosing, proper use and what to. Tylenol PM is the brand name of a combination drug product containing. Compare Robitussin DM vs. Tylenol Cold, which is better for uses like: Cough, Common Cold and Flu. Interaction between Robitussin DM and Tylenol Cold. NEW Robitussin 12 Hour | It’s Never Just a Cough; NEW Robitussin DM Max | It’s Never Just a Cough; Robitussin CF Severe | It’s Never Just a Cough; Compare Robitussin Nighttime Cough DM vs. Tylenol PM. Robitussin Nighttime Cough DM can help you get a good night's. Tylenol PM works well when you have a. Can you take Robitussin and Tylenol pm in the same day?. To be safe, wait 4 or more hours after you take Robitussin. Tylenol PM has 2 main ingredients. Dr. Sparacino responded: Yes. Yes, under the direction of your doctor.