Where are the ingredients for Robitussin DM sourced?


Quick Answer

The active ingredients of guaiphenesin and dextromethorphan in Robitussin DM are manufactured by Pfizer, according to Pfizer's website. There is no information on the source of inactive ingredients in Robitussin DM. This medication is sugar-free and suitable for children 2 years of age and older.

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Full Answer

Robitussin DM is used to loosen phlegm, which makes coughs more productive, states Pfizer. It also increases the cough threshold for unnecessary coughing. Common side effects associated with Robitussin DM are drowsiness, dizziness and upset stomach, explains Drugs.com. Severe side effects that require immediate medical attention include swelling of the mouth, face, lips or tongue. Any severe allergic reaction such as a rash, hives, itching, tightness of the chest or difficulty breathing are cause for prompt medical attention.

Do not take any other medications while taking Robitussin DM without speaking with a doctor first, recommends Drugs.com. There are a wide variety of medications that interact with Robitussin DM, such as prednisone, omeprazole, acetaminophen, ibuprofen and aspirin. Drinking alcohol should also be avoided, as it can interact with Robitussin DM negatively and increase drowsiness. People on dialysis who have kidney failure or liver failure must adjust the dose accordingly. The pediatric dose and adult dose are not the same amount and should be adjusted accordingly.

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