| ATC | R06AA | Aminoalkyl ethers | ATC1-4 | | doxylamine |
| ATC | R05DA | Opium alkaloids and derivatives | ATC1-4 | | dextromethorphan |
| ATC | R01BA | Sympathomimetics | ATC1-4 | | pseudoephedrine |
| FDASPL | N0000175552 | alpha-Adrenergic Agonist | EPC | has_epc | pseudoephedrine |
| FDASPL | N0000175750 | Antihistamine | EPC | has_epc | doxylamine |
| FDASPL | N0000182149 | Sigma-1 Agonist | EPC | has_epc | dextromethorphan |
| FDASPL | N0000181821 | Uncompetitive N-methyl-D-aspartate Receptor Antagonist | EPC | has_epc | dextromethorphan |
| FDASPL | N0000000207 | Histamine Receptor Antagonists | MOA | has_moa | doxylamine |
| FDASPL | N0000182147 | Sigma-1 Receptor Agonists | MOA | has_moa | dextromethorphan |
| FDASPL | N0000181819 | Uncompetitive NMDA Receptor Antagonists | MOA | has_moa | dextromethorphan |
| MEDRT | D003915 | Dextromethorphan | CHEM | has_ingredient | dextromethorphan |
| MEDRT | D003915 | Dextromethorphan | CHEM | has_ingredient | dextromethorphan hydrobromide |
| MEDRT | D004319 | Doxylamine | CHEM | has_ingredient | doxylamine succinate |
| MEDRT | D004319 | Doxylamine | CHEM | has_ingredient | doxylamine |
| MEDRT | D054199 | Pseudoephedrine | CHEM | has_ingredient | pseudoephedrine |
| MEDRT | D054199 | Pseudoephedrine | CHEM | has_ingredient | pseudoephedrine hydrochloride |
| MEDRT | D001249 | Asthma | DISEASE | may_treat | pseudoephedrine |
| MEDRT | D001249 | Asthma | DISEASE | may_treat | pseudoephedrine hydrochloride |
| MEDRT | D003139 | Common Cold | DISEASE | may_treat | pseudoephedrine |
| MEDRT | D003139 | Common Cold | DISEASE | may_treat | pseudoephedrine hydrochloride |
| MEDRT | D003371 | Cough | DISEASE | may_treat | dextromethorphan |
| MEDRT | D003371 | Cough | DISEASE | may_prevent | dextromethorphan |
| MEDRT | D003371 | Cough | DISEASE | may_prevent | dextromethorphan hydrobromide |
| MEDRT | D003371 | Cough | DISEASE | may_treat | dextromethorphan hydrobromide |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | dextromethorphan |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | pseudoephedrine |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | doxylamine succinate |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | doxylamine |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | pseudoephedrine hydrochloride |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | dextromethorphan hydrobromide |
| MEDRT | D006261 | Headache | DISEASE | may_treat | doxylamine |
| MEDRT | D006261 | Headache | DISEASE | may_treat | doxylamine succinate |
| MEDRT | D012221 | Rhinitis, Allergic, Perennial | DISEASE | may_treat | pseudoephedrine hydrochloride |
| MEDRT | D012221 | Rhinitis, Allergic, Perennial | DISEASE | may_treat | doxylamine |
| MEDRT | D012221 | Rhinitis, Allergic, Perennial | DISEASE | may_treat | doxylamine succinate |
| MEDRT | D012221 | Rhinitis, Allergic, Perennial | DISEASE | may_treat | pseudoephedrine |
| MEDRT | D012852 | Sinusitis | DISEASE | may_treat | pseudoephedrine hydrochloride |
| MEDRT | D012852 | Sinusitis | DISEASE | may_treat | pseudoephedrine |
| MEDRT | D007319 | Sleep Initiation and Maintenance Disorders | DISEASE | may_treat | doxylamine |
| MEDRT | D007319 | Sleep Initiation and Maintenance Disorders | DISEASE | may_treat | doxylamine succinate |
| MEDRT | N0000000209 | Adrenergic alpha-Agonists | MOA | has_moa | pseudoephedrine hydrochloride |
| MEDRT | N0000000209 | Adrenergic alpha-Agonists | MOA | has_moa | pseudoephedrine |
| MEDRT | N0000000245 | Adrenergic beta-Agonists | MOA | has_moa | pseudoephedrine hydrochloride |
| MEDRT | N0000000245 | Adrenergic beta-Agonists | MOA | has_moa | pseudoephedrine |
| MEDRT | N0000000190 | Histamine H1 Receptor Antagonists | MOA | has_moa | doxylamine |
| MEDRT | N0000000190 | Histamine H1 Receptor Antagonists | MOA | has_moa | doxylamine succinate |
| MEDRT | N0000000184 | Monoamine Oxidase Inhibitors | MOA | ci_moa | dextromethorphan hydrobromide |
| MEDRT | N0000000184 | Monoamine Oxidase Inhibitors | MOA | ci_moa | pseudoephedrine |
| MEDRT | N0000000184 | Monoamine Oxidase Inhibitors | MOA | ci_moa | pseudoephedrine hydrochloride |
| MEDRT | N0000000184 | Monoamine Oxidase Inhibitors | MOA | ci_moa | dextromethorphan |
| MEDRT | N0000000109 | Serotonin Uptake Inhibitors | MOA | has_moa | dextromethorphan hydrobromide |
| MEDRT | N0000000109 | Serotonin Uptake Inhibitors | MOA | has_moa | dextromethorphan |
| MEDRT | N0000182147 | Sigma-1 Receptor Agonists | MOA | has_moa | dextromethorphan hydrobromide |
| MEDRT | N0000182147 | Sigma-1 Receptor Agonists | MOA | has_moa | dextromethorphan |
| MEDRT | N0000181819 | Uncompetitive NMDA Receptor Antagonists | MOA | has_moa | dextromethorphan |
| MEDRT | N0000181819 | Uncompetitive NMDA Receptor Antagonists | MOA | has_moa | dextromethorphan hydrobromide |
| MEDRT | N0000008322 | Bronchodilation | PE | has_pe | pseudoephedrine |
| MEDRT | N0000008322 | Bronchodilation | PE | has_pe | pseudoephedrine hydrochloride |
| MEDRT | N0000008657 | Decreased Histamine Activity | PE | has_pe | doxylamine succinate |
| MEDRT | N0000008657 | Decreased Histamine Activity | PE | has_pe | doxylamine |
| MEDRT | N0000008701 | Decreased Medullary Respiratory Drive | PE | has_pe | dextromethorphan hydrobromide |
| MEDRT | N0000008701 | Decreased Medullary Respiratory Drive | PE | has_pe | dextromethorphan |
| MEDRT | N0000009908 | Vasoconstriction | PE | has_pe | pseudoephedrine |
| MEDRT | N0000009908 | Vasoconstriction | PE | has_pe | pseudoephedrine hydrochloride |