It also helps loosen phlegm from chest congestion so that you can cough it up and spit it out. Robitussin DM comes in a liquid form that you take by mouth. Hydroxychloroquine sulfate 200 mg oral tablet verified Plaquenil flying saucer Guaifenesin is an expectorant. It helps loosen congestion in your chest and throat, making it easier to cough out through your mouth. Dextromethorphan and guaifenesin is a combination medicine used to treat cough and chest congestion caused by the common cold, infections. Influence of hydroxychloroquine on the bioavailability of oral metoprolol Article in British Journal of Clinical Pharmacology 496549 - 554 June 2000 with 157 Reads How we measure 'reads' Aims. Hydroxychloroquine HCQ is used widely in the treatment of chronic inflammatory diseases such as rheumatoid arthritis. Since there is great interindividual variability in the pharmacokinetics of HCQ and chloroquine is a potent inhibitor of CYP2D6-catalysed pathways in vitro, we wished to study the interaction of HCQ with CYP2D6-mediated metabolism of other drugs in vivo. Robitussin DM contains two active ingredients: dextromethorphan and guaifenesin. It comes in regular-strength, maximum-strength, sugar-free, and children’s formulations. Tussin dm and hydroxychloroquine interaction Interactions between Quinidine Sulfate Oral and qt., Influence of hydroxychloroquine on the bioavailability of oral. Typical plaquenil maculopathy octChloroquine phosphate 250 mg tablets If you have an allergy to guaifenesin, dextromethorphan, or any other part of Robitussin DM guaifenesin and dextromethorphan liquid. If you are allergic to Robitussin DM guaifenesin and dextromethorphan liquid; any part of Robitussin DM guaifenesin and dextromethorphan liquid; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had. Robitussin DM Indications, Side Effects, Warnings -. Influence of hydroxychloroquine on the bioavailability of.. Diazepam oral and dextromethorphan hbr oral Drug Interactions.. Doctors give trusted, helpful answers on causes, diagnosis, symptoms, treatment, and more Dr. Litt on tussin dm cough adverse effects There is no drug interaction for the tussin dm and alcohol. However, moderation is the key. If concerned, always discuss your questions with your pcp. Have fun. WebMD provides information about interactions between Azithromycin Oral and qt-prolonging-agents-hydroxychloroquine. Kligfield P, Menon V, Philippides GJ, Roden DM, Zareba W. Prevention of. Tussin DM. Generic Name dextromethorphan hydrobromide and guaifenesin. Dosage Form oral liquid. Medically reviewed by Last updated on Nov 1, 2018. Disclaimer Most OTC drugs are not reviewed and approved by FDA, however they may be marketed if they comply with applicable regulations and policies.