Care Simple Linctus Information: Care Simple Linctus is a cough medication that provides symptomatic relief. Recommended for patients aged 12 and above. This medicine contains citric acid monohydrate. Citric acid monohydrate is a compound from citrus fruits. Linctus is a syrup-like liquid, used for oral ingestion of medication. Coats the throat and helps reduce irritation that causes coughing. You should consult a doctor if your symptoms do not improve. We advise all patients to read the patient information booklet.