| ATC | R06AA | Aminoalkyl ethers | ATC1-4 | | diphenhydramine |
| ATC | D04AA | Antihistamines for topical use | ATC1-4 | | diphenhydramine |
| ATC | D04AA | Antihistamines for topical use | ATC1-4 | | tripelennamine |
| ATC | R06AC | Substituted ethylene diamines | ATC1-4 | | tripelennamine |
| FDASPL | N0000175587 | Histamine-1 Receptor Antagonist | EPC | has_epc | diphenhydramine |
| FDASPL | N0000000190 | Histamine H1 Receptor Antagonists | MOA | has_moa | diphenhydramine |
| MEDRT | D004155 | Diphenhydramine | CHEM | has_ingredient | diphenhydramine |
| MEDRT | D004155 | Diphenhydramine | CHEM | has_ingredient | diphenhydramine hydrochloride |
| MEDRT | D014309 | Tripelennamine | CHEM | has_ingredient | tripelennamine |
| MEDRT | D014309 | Tripelennamine | CHEM | has_ingredient | tripelennamine hydrochloride |
| MEDRT | D001008 | Anxiety Disorders | DISEASE | may_treat | diphenhydramine |
| MEDRT | D001008 | Anxiety Disorders | DISEASE | may_treat | diphenhydramine hydrochloride |
| MEDRT | D001249 | Asthma | DISEASE | may_treat | tripelennamine hydrochloride |
| MEDRT | D001249 | Asthma | DISEASE | may_treat | tripelennamine |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | tripelennamine hydrochloride |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | diphenhydramine hydrochloride |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | diphenhydramine |
| MEDRT | D004342 | Drug Hypersensitivity | DISEASE | ci_with | tripelennamine |
| MEDRT | D015812 | Glaucoma, Angle-Closure | DISEASE | ci_with | tripelennamine |
| MEDRT | D015812 | Glaucoma, Angle-Closure | DISEASE | ci_with | tripelennamine hydrochloride |
| MEDRT | D007223 | Infant | DISEASE | ci_with | tripelennamine |
| MEDRT | D007223 | Infant | DISEASE | ci_with | tripelennamine hydrochloride |
| MEDRT | D007231 | Infant, Newborn | DISEASE | ci_with | diphenhydramine hydrochloride |
| MEDRT | D007231 | Infant, Newborn | DISEASE | ci_with | diphenhydramine |
| MEDRT | D007234 | Infant, Premature | DISEASE | ci_with | diphenhydramine hydrochloride |
| MEDRT | D007234 | Infant, Premature | DISEASE | ci_with | diphenhydramine |
| MEDRT | D007774 | Lactation | DISEASE | ci_with | tripelennamine |
| MEDRT | D007774 | Lactation | DISEASE | ci_with | diphenhydramine |
| MEDRT | D007774 | Lactation | DISEASE | ci_with | diphenhydramine hydrochloride |
| MEDRT | D007774 | Lactation | DISEASE | ci_with | tripelennamine hydrochloride |
| MEDRT | D009041 | Motion Sickness | DISEASE | may_treat | diphenhydramine |
| MEDRT | D009041 | Motion Sickness | DISEASE | may_treat | diphenhydramine hydrochloride |
| MEDRT | D009325 | Nausea | DISEASE | may_treat | diphenhydramine |
| MEDRT | D009325 | Nausea | DISEASE | may_treat | diphenhydramine hydrochloride |
| MEDRT | D010437 | Peptic Ulcer | DISEASE | ci_with | tripelennamine hydrochloride |
| MEDRT | D010437 | Peptic Ulcer | DISEASE | ci_with | tripelennamine |
| MEDRT | D011470 | Prostatic Hyperplasia | DISEASE | ci_with | tripelennamine hydrochloride |
| MEDRT | D011470 | Prostatic Hyperplasia | DISEASE | ci_with | tripelennamine |
| MEDRT | D012140 | Respiratory Tract Diseases | DISEASE | ci_with | tripelennamine |
| MEDRT | D012140 | Respiratory Tract Diseases | DISEASE | ci_with | tripelennamine hydrochloride |
| MEDRT | D012221 | Rhinitis, Allergic, Perennial | DISEASE | may_treat | tripelennamine hydrochloride |
| MEDRT | D012221 | Rhinitis, Allergic, Perennial | DISEASE | may_treat | diphenhydramine |
| MEDRT | D012221 | Rhinitis, Allergic, Perennial | DISEASE | may_treat | tripelennamine |
| MEDRT | D012221 | Rhinitis, Allergic, Perennial | DISEASE | may_treat | diphenhydramine hydrochloride |
| MEDRT | D007319 | Sleep Initiation and Maintenance Disorders | DISEASE | may_treat | diphenhydramine |
| MEDRT | D007319 | Sleep Initiation and Maintenance Disorders | DISEASE | may_treat | diphenhydramine hydrochloride |
| MEDRT | D012912 | Sneezing | DISEASE | may_treat | diphenhydramine |
| MEDRT | D012912 | Sneezing | DISEASE | may_treat | diphenhydramine hydrochloride |
| MEDRT | D013224 | Status Asthmaticus | DISEASE | ci_with | diphenhydramine |
| MEDRT | D013224 | Status Asthmaticus | DISEASE | ci_with | diphenhydramine hydrochloride |
| MEDRT | D001748 | Urinary Bladder Neck Obstruction | DISEASE | ci_with | tripelennamine |
| MEDRT | D001748 | Urinary Bladder Neck Obstruction | DISEASE | ci_with | tripelennamine hydrochloride |
| MEDRT | D014581 | Urticaria | DISEASE | may_treat | diphenhydramine |
| MEDRT | D014581 | Urticaria | DISEASE | may_treat | diphenhydramine hydrochloride |
| MEDRT | D014581 | Urticaria | DISEASE | may_treat | tripelennamine hydrochloride |
| MEDRT | D014581 | Urticaria | DISEASE | may_treat | tripelennamine |
| MEDRT | N0000000190 | Histamine H1 Receptor Antagonists | MOA | has_moa | diphenhydramine |
| MEDRT | N0000000190 | Histamine H1 Receptor Antagonists | MOA | has_moa | diphenhydramine hydrochloride |
| MEDRT | N0000000190 | Histamine H1 Receptor Antagonists | MOA | has_moa | tripelennamine |
| MEDRT | N0000000190 | Histamine H1 Receptor Antagonists | MOA | has_moa | tripelennamine hydrochloride |
| MEDRT | N0000000184 | Monoamine Oxidase Inhibitors | MOA | ci_moa | tripelennamine |
| MEDRT | N0000000184 | Monoamine Oxidase Inhibitors | MOA | ci_moa | tripelennamine hydrochloride |
| MEDRT | N0000008657 | Decreased Histamine Activity | PE | has_pe | tripelennamine |
| MEDRT | N0000008657 | Decreased Histamine Activity | PE | has_pe | tripelennamine hydrochloride |