Pill with imprint Mx Jr is Blue, Oval and has been identified as Mucinex Junior Cold and Flu acetaminophen 162.5 mg / dextromethorphan hydrobromide 5 mg / guaifenesin 100 mg / phenylephrine hydrochloride 2.5 mg. It is supplied by Reckitt Benckiser Pharmaceuticals Inc.

Acetaminophen/dextromethorphan/guaifenesin/phenylephrine is used in the treatment of Influenza; Cold Symptoms and belongs to the drug class upper respiratory combinations. FDA has not classified the drug for risk during pregnancy. Acetaminophen/dextromethorphan/guaifenesin/phenylephrine acetaminophen 162.5 mg / dextromethorphan hydrobromide 5 mg / guaifenesin 100 mg / phenylephrine hydrochloride 2.5 mg is not a controlled substance under the Controlled Substances Act (CSA).