The medication should be taken with or soon after a meal. Side Effects. Check the ingredients and warnings on the medication label if you are concerned about phenylalanine.Use dextromethorphan exactly as directed on the label, or as it has been prescribed by your doctor. Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. Metoprolol is used to treat high blood pressure and prevent the symptoms of certain types of angina (chest pain). Ask your pharmacist any questions you have about this medication, especially if it is new to you.Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.Copyright 1996-2020 Cerner Multum, Inc. Serious, life-threatening side effects can occur if you take dextromethorphan before the MAO inhibitor has cleared from your body.Ask a doctor or pharmacist about using dextromethorphan if you have emphysema or chronic bronchitis.It is unknown whether dextromethorphan is harmful to an unborn baby.

What Is Zestril?

Do not use the medication in larger amounts, or use it for longer than recommended. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. A few years later, products with an unpleasant taste were introduced (such as Robitussin, Vicks-44, and Dextrotussion), but later the same manufacturers began producing products with a better taste.DXM Pharmaceuticals sells a highly concentrated product called "RoboCough," which is marketed for travel, but may have common use recreationally.InChI=1S/C18H25NO/c1-19-10-9-18-8-4-3-5-15(18)17(19)11-13-6-7-14(20-2)12-16(13)18/h6-7,12,15,17H,3-5,8-11H2,1-2H3/t15-,17+,18+/m1/s1 Dextromethorphan is a synthetic, methylated dextrorotary analogue of levorphanol, a substance related to codeine and a non-opioid derivate of morphine.Dextromethorphan exhibits antitussive activity and is devoid of analgesic or addictive property. Dextromethorphan is a medication most often used as a cough suppressant in over-the-counter cold and cough medicines. This would be important to know if you have phenylketonuria (PKU). Dextromethorphan is contained in many combination medicines available over the counter. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.Things to remember when you fill your prescription.WebMD does not provide medical advice, diagnosis or treatment. CYP2B6 is more effective than CYP3A4 at N-demethylation of dextromethorphan, but since the average individual has a much lower CYP2B6 content in the liver compared to CYP3A4, most N-demethylation of dextromethorphan is catalyzed by CYP3A4.During the 1960s and 1970s, dextromethorphan became available in an over-the-counter tablet form by the brand name Romilar. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time.

Consult your healthcare professional (e.g., doctor or pharmacist) for more in formation. Dextromethorphan will not treat a cough that is caused by smoking, asthma, or emphysema.Do not use dextromethorphan if you have used an MAO inhibitor such as isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam), tranylcypromine (Parnate), or methylene blue injection within the past 14 days. The following side effects have been reported by at least 1% of people taking this medication.