Are there any contraindications for using antihistamines or decongestants?

For adults, the recommended dose of dextromethorphan is 10 mg to 20 mg taken by mouth every 4 hours, or 30 mg taken by mouth every 6 to 8 hours. The maximum ... ... DM 12hr extended-release 600 mg guaifenesin and 30 mg dextromethorphan HBr tablets ... Content is for general informational purposes only. You should not ... Nuedexta (dextromethorphan HBr and quinidine sulfate). Because ALS and its symptoms are different for every person, the medication(s) a doctor prescribes can ... citalopram and dextromethorphan both increase serotonin levels. Avoid or Use Alternate Drug. Combination may increase risk of serotonin syndrome or neuroleptic ... Dextromethorphan hydrobromide, diphenhydramine hydrochloride, levomenthol. Click here for product information. BENYLIN® Day & Night Tablets (P). Content is for general informational purposes only. You should not rely solely on the information displayed on our website. Actual product may vary. Always ... NUEDEXTA (dextromethorphan HBr and quinidine sulfate) capsules · REXULTI ... ("OAPI") for informational purposes and for the patient's convenience only ... Product Information. Product Details. Robitussin Cough + Chest Congestion DM 4FOZ Perspective: Main. For frequent, persistent coughs, Robitussin Cough & Chest ... Correct Dose | Children's Cough & Chest Congestion DM | Dextromethorphan HBr ... Information on this website is provided for informational purposes only. Patients with increased concentrations of dextromethorphan may experience drowsiness or serotonergic side effects (dizziness, nervousness or restlessness, ...