Veno's Expectorant Veno's Expectorant relieves the symptoms of chesty coughs & catarrh particularly associated with colds & flu. It contains guaifenisin to loosen phlegm, allowing you to cough it up more easily, & glucose liquid & treacle which have a protective, coating action to soothe sore, irritated, tickling & inflamed throats. Veno's Expectorant is suitable for adults & children aged 12 years & over.