Is Lemsip Good For Chesty Coughs Lemsip also does Cough! Whether it\'s a dry tickly cough, chesty cough or a mucus cough, Lemsip has a remedy to help relieve the symptoms. There is nothing stronger without prescription for your chesty cough*. Each 5ml dose contains 50mg Guaifenesin for symptomatic relief. Does Lemsip Get Rid Of Colds Lemsip and similar medicinal drink sachets, which contain paracetamol and phenylephrine hydrochloride to relieve the symptoms of coughs and colds, are a popular choice when looking for a remedy for this seasonal misery. Contains Guaifenesin (50mg) that helps to get rid of phlegm from the airways.