Cause of Colds, Flu and Catarrh
- Starts to Work Quickly: Medscape [Internet]. Drugs & Diseases guaifenesin (OTC). WebMD LLC; [updated n.d; cited 2019 September 9].
- Starts to work in 15mins for irritating, dry coughs: Pender, E.S & Parks, B.R: Toxicity with dextromethorphan-containing preparations: a literature review and report of two additional cases. Pediatr Emerg Care 1991; 7:163-165
- Starts to work in 15mins for effective cough relief: M Donaldson, M., Gizzarelli, G & Chanpong, B: Oral Seadtion: A Primer on Anxiolysis for the Adult Patient. Anaesth Prog. 2007; 54: 118-129