What If I Overdose on Dextromethorphan?An overdose with this medication can be dangerous. If you happen to take too much, seek immediate medical attention.
(Click Dextromethorphan Overdose for more information.)
Storage InformationIn general, dextromethorphan medications should be stored at room temperature, away from moisture and heat. Keep this and all other medicines out of the reach of children. Refer to the storage directions for your particular product.
What Should I Do If I Forget a Dose?Dextromethorphan is normally taken on an as-needed basis for coughing. If you are taking this medication on a regular schedule and miss a dose, just take it as soon as you remember. If it is almost time for your next dose, skip the one you missed and continue with your regular schedule. Do not take a double dose.
Available ProductsDextromethorphan is available both alone and in combination with other active medications. It comes as dextromethorphan hydrobromide (HBr), or as a long-acting formulation called dextromethorphan polistirex. Many different dextromethorphan products are available in several different strengths and forms.
With a prescription, dextromethorphan is available by itself or in combination with other active ingredients, such as pain relievers, decongestants, expectorants, or antihistamines. There are many such products available in many different combinations. Some of the most well-known brands for such products include:
Available prescription medicines that contain dextromethorphan include:
- Promethazine and dextromethorphan 15 mg/6.25 mg per 5 mL oral liquid
- Brompheniramine, dextromethorphan, and pseudoephedrine 2 mg/10 mg/30 mg per 5 ml oral liquid (Bromfed® DM)
- Dextromethorphan and quinidine (Nuedexta) 20 mg/10 mg capsules.