Anatomical Therapeutic Chemical • R05DA • Opium alkaloids and derivatives

A Alimentary tract and metabolism

B Blood and blood forming organs

C Cardiovascular system

D Dermatologicals

G Genito urinary system and sex hormones

H Systemic hormonal preparations, excluding sex hormones and insulins

J Antiinfectives for systemic use

L Antineoplastic and immunomodulating agents

M Musculo-skeletal system

N Nervous system

P Antiparasitic products, insecticides and repellents

R Respiratory system

R01 Nasal preparations

R02 Throat preparations

R03 Drugs for obstructive airway diseases

R05 Cough and cold preparations

R05C Expectorants, excl. combinations with cough suppressants

R05D Cough suppressants, excl. combinations with expectorants

R05DA Opium alkaloids and derivatives

R05DA04 codeine

R05DA09 dextromethorphan

R05DA20 combinations

R05DA20 dextromethorphan + guaifenesin

R05DA20 paracetamol + dextromethorphan + chlorpheniramine + pseudoephedrine

R05DA20 paracetamol + dextromethorphan + pseudoephedrine

R05DA20 paracetamol + pseudoephedrine + dextromethorphan

R05DA20 paracetamol + pseudoephedrine + dextromethorphan + chlorpheniramine

R05DB Other cough suppressants

R05F Cough suppressants and expectorants, combinations

R05X Other cold preparations

R06 Antihistamines for systemic use

R07 Other respiratory system products

S Sensory organs

V Various