The Powerful Placebo in Cough Studies?

Beecher, 1955, The powerful placebo, J Am Med Assoc, 159, 1602, 10.1001/jama.1955.02960340022006

Brown, 1998, The placebo effect, Sci Am, 278, 90, 10.1038/scientificamerican0198-90

Margo, 1999, The placebo effect, Surv Ophthalmol, 44, 31, 10.1016/S0039-6257(99)00060-0

Kirsch, 2000, Are drug and placebo effects in depression additive?, Biol Psychiatry, 47, 733, 10.1016/S0006-3223(00)00832-5

Iaboni, 1995, Dextromethorphan abuse in a dually diagnosed patient, J Nerv Ment Dis, 183, 341, 10.1097/00005053-199505000-00014

Taylor, 1993, Efficacy of cough suppressants in children, J Pediatr, 122, 799, 10.1016/S0022-3476(06)80031-4

1999, Drug Ther Bull, 37, 19, 10.1136/dtb.1999.37319

Fuller, 1990, Physiology and treatment of cough, Thorax, 45, 425, 10.1136/thx.45.6.425

Choudry, 1992, Inhibition of Gustatory Rhinorrhea by Intranasal Ipratropium Bromide, Eur J Clin Pharmacol, 42, 561, 10.1007/BF00314871

Eccles, 1994, Menthol and related cooling compounds, J, Pharm Pharmacol, 46, 618, 10.1111/j.2042-7158.1994.tb03871.x

Kienle, 1996, Placebo effect and placebo concept: a critical methodological and conceptual analysis of reports on the magnitude of the placebo effect, Altern Ther, 2, 39

Shapiro, 1999, The placebo: Is it much ado about nothing?, 12

Morris, 1999, Placebo, pain and belief: a biocultural model, 187

Tukiainen, 1986, The treatment of acute transient cough – a placebo-controlled comparison of Dextromethorphan and Dextromethorphan-Beta-2 – Sympathomimetic combination, Eur J Respir Dis, 69, 95

Adams, 1993, Antitussive activity and tolerability of moguisteine in patients with acute cough: a randomized, double blind, placebo-controlled study, Adv Ther, 10, 263

Eccles, 1992, Lack of effect of codeine in the treatment of cough associated with acute upper respiratory tract infection, J Clin Pharm Ther, 17, 175, 10.1111/j.1365-2710.1992.tb01289.x

Parvez, 1996, Evaluation of antitussive agents in man, Pulm Pharmacol, 9, 299, 10.1006/pulp.1996.0039

Freestone, 1997, Assessment of the antitussive efficacy of codeine in cough associated with common cold, J Pharm Pharmacol, 49, 1045, 10.1111/j.2042-7158.1997.tb06039.x

Lee, 2000, Antitussive efficacy of dextromethorphan in cough associated with acute upper respiratory tract infection, J Pharm Pharmacol, 52, 1137, 10.1211/0022357001774903

Lee, 2001, The effect of placebo treatment on cough associated with common cold, Br J Clin Pharmacol, 51, 373P, 10.1046/j.1365-2125.1999.00917.x

Hutchings, 1993, Voluntary cough suppression as an indication of symptom severity in upper respiratory tract infections, Eur Respir J, 6, 1449, 10.1183/09031936.93.06101449

ter Riet, 1998, Is placebo analgesia mediated by endogenous opioids? A systematic review, Pain, 76, 273, 10.1016/S0304-3959(98)00057-8

Benedetti, 1997, The neurobiology of placebo analgesia: From endogenous opioids to cholecystokinin, Prog Neurobio, 52, 109, 10.1016/S0301-0082(97)00006-3

Newsom Davis, 1972, Separation of descending spinal pathways to respiratory motoneurons, Exp Neurol, 34, 78, 10.1016/0014-4886(72)90189-6