Pill Imprint S L 522
This green elliptical / oval pill with imprint S L 522 on it has been identified as: Guaifenesin/phenylpropanolamine 400 mg-75 mg.
This medicine is known as guaifenesin/phenylpropanolamine. It is available as a prescription and/or OTC medicine and is commonly used for Cold Symptoms, Cough and Nasal Congestion.