Robitussin-DM Oral: Uses, Side Effects, Interactions, Pictures, Warnings & Dosing - WebMD

Take this medication by mouth with or without food, as directed by your doctor. If you are self-treating, follow all directions on the product package. If you have any questions, ask your doctor or pharmacist.

Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion.

Dosage is based on your age, medical condition, and response to treatment. Do not increase your dose or take this drug more often than directed.

If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose.

For powder packets, empty the entire contents of the packet onto the tongue and swallow. To prevent a bitter taste, do not chew. If you are taking the capsule form, swallow the capsule whole.

Improper use of this medication (abuse) may result in serious harm (such as brain damage, seizure, death). Do not increase your dose, take it more frequently, or use it for a longer time than directed.

Tell your doctor if your cough returns, or if it is accompanied by fever, severe sore throat, rash, persistent headache, or if it persists or worsens after 7 days. These may be signs of a serious medical problem. Seek immediate medical attention if you think you may have a serious medical problem.