Explore drug properties, targets, and indications with answers grounded in DrugCentral.
Powered by DrugCentral + retrieval-augmented AIAsk in your own words. Each question is answered independently.
Select a question to fill the editor, then ask it or make it your own.
Your answer will appear here. Open linked drug cards in a new tab to explore the source details.
Ask DrugCentral helps you explore drug properties, biological targets, and indications using natural language. Sample questions offer starting points, and linked drug cards let you check the underlying records.
Each request is independent; previous questions are not sent as conversation history. You can edit a sample before submitting, retry a failed request, or switch back to normal search. Drug links open in a new tab so your question and answer stay available.
Answers may contain mistakes or omit information. Verify details against DrugCentral records and original sources.
AI can make mistakes. Verify answers against the original sources before relying on them.
| Stem definition | Drug id | CAS RN |
|---|---|---|
| antihistaminics | 82 | 87848-99-5 |
| Dose | Unit | Route |
|---|---|---|
| 24 | mg | O |
| Property | Value | Reference |
|---|---|---|
| BDDCS (Biopharmaceutical Drug Disposition Classification System) | 3 | Benet LZ, Broccatelli F, Oprea TI |
| S (Water solubility) | 0.70 mg/mL | Benet LZ, Broccatelli F, Oprea TI |
| EoM (Fraction excreted unchanged in urine) | 67 % | Benet LZ, Broccatelli F, Oprea TI |
| MRTD (Maximum Recommended Therapeutic Daily Dose) | 1.31 ยตM/kg/day | Contrera JF, Matthews EJ, Kruhlak NL, Benz RD |
| BA (Bioavailability) | 18 % | Kim MT, Sedykh A, Chakravarti SK, Saiakhov RD, Zhu H |
| fu (Fraction unbound in plasma) | 0.16 % | Kawashima H, Watanabe R, Esaki T, Kuroda M, Nagao C, Natsume-Kitatani Y, Ohashi R, Komura H, Mizuguchi K |
| Property | Description | Value | Unit | Confidence | Similarity |
|---|---|---|---|---|---|
| kinase-safety-class | ACVR2A,ACVR2B,AURKA,AXL,BRAF,BTK,CAMK2D,CDK5,CDK9,DYRK1B,EGFR,EIF2AK3,ERBB2,GRK2,IKBKB,ITK,MAP2K6,MAPK10,MAPK7,MAPKAPK2,PDK1,PDK2,PDK4,PIK3CB,PRKDC,STK33,SYK,TEK,TGFBR1 | 29 | |||
| kinase-selectivity-class | ACVR2B,AXL,BRAF,CDK9,DDR1,DYRK1B,EIF2AK3,EPHB4,ERBB2,GRK2,MAP2K6,MAPK7,SIK2,STK33,TEK,TGFBR1,TTK,ZAP70 | 18 | |||
| pfas-class | PFAS structural alert (1 = True, 0 = False) | 0 |
| Date | Agency | Company | Orphan |
|---|---|---|---|
| March 25, 1994 | FDA | AUXILIUM PHARMS INC |
| MedDRA adverse event term | Likelihood ratio | Likelihood ratio threshold | Patients taking drug having adverse event | Patients taking drug not having adverse event | Patients not taking drug having adverse event | Patients not taking drug not having adverse event |
|---|---|---|---|---|---|---|
| Asthma-chronic obstructive pulmonary disease overlap syndrome | 361.92 | 35.25 | 75 | 4069 | 4824 | 90619479 |
| Total lung capacity increased | 360.08 | 35.25 | 75 | 4069 | 4946 | 90619357 |
| Hypomania | 338.40 | 35.25 | 79 | 4065 | 8818 | 90615485 |
| Jaundice cholestatic | 328.88 | 35.25 | 79 | 4065 | 9964 | 90614339 |
| Sarcoidosis | 303.78 | 35.25 | 75 | 4069 | 10598 | 90613705 |
| Nasal polyps | 302.35 | 35.25 | 75 | 4069 | 10805 | 90613498 |
| Schizophrenia | 297.86 | 35.25 | 79 | 4065 | 14835 | 90609468 |
| Rhinitis allergic | 274.70 | 35.25 | 76 | 4068 | 16709 | 90607594 |
| Cardiac murmur | 264.11 | 35.25 | 75 | 4069 | 18119 | 90606184 |
| Bronchiectasis | 248.94 | 35.25 | 75 | 4069 | 22255 | 90602048 |
| Psychotic disorder | 244.24 | 35.25 | 80 | 4064 | 31150 | 90593153 |
| Blood bilirubin increased | 222.05 | 35.25 | 81 | 4063 | 43389 | 90580914 |
| Lung neoplasm malignant | 217.63 | 35.25 | 69 | 4075 | 24204 | 90600099 |
| Hepatotoxicity | 210.53 | 35.25 | 79 | 4065 | 45763 | 90578540 |
| Cholelithiasis | 200.11 | 35.25 | 79 | 4065 | 52427 | 90571876 |
| Chronic obstructive pulmonary disease | 177.32 | 35.25 | 80 | 4064 | 73749 | 90550554 |
| Gastrooesophageal reflux disease | 107.11 | 35.25 | 76 | 4068 | 166261 | 90458042 |
| Wheezing | 85.05 | 35.25 | 77 | 4067 | 238003 | 90386300 |
| Hepatic enzyme increased | 74.77 | 35.25 | 87 | 4057 | 360649 | 90263654 |
| Oedema peripheral | 72.32 | 35.25 | 73 | 4071 | 257842 | 90366461 |
| Condition aggravated | 70.23 | 35.25 | 109 | 4035 | 595436 | 90028867 |
| Pneumonia | 54.23 | 35.25 | 101 | 4043 | 637958 | 89986345 |
| MedDRA adverse event term | Likelihood ratio | Likelihood ratio threshold | Patients taking drug having adverse event | Patients taking drug not having adverse event | Patients not taking drug having adverse event | Patients not taking drug not having adverse event |
|---|---|---|---|---|---|---|
| Spleen congestion | 43.28 | 37.40 | 7 | 632 | 350 | 42620346 |
| Pharyngeal paraesthesia | 43.06 | 37.40 | 8 | 631 | 901 | 42619795 |
| MedDRA adverse event term | Likelihood ratio | Likelihood ratio threshold | Patients taking drug having adverse event | Patients taking drug not having adverse event | Patients not taking drug having adverse event | Patients not taking drug not having adverse event |
|---|---|---|---|---|---|---|
| Total lung capacity increased | 369.19 | 30.58 | 76 | 4674 | 5036 | 110579513 |
| Asthma-chronic obstructive pulmonary disease overlap syndrome | 352.83 | 30.58 | 76 | 4674 | 6268 | 110578281 |
| Hypomania | 337.62 | 30.58 | 80 | 4670 | 10130 | 110574419 |
| Jaundice cholestatic | 309.15 | 30.58 | 80 | 4670 | 14528 | 110570021 |
| Sarcoidosis | 301.07 | 30.58 | 76 | 4674 | 12503 | 110572046 |
| Nasal polyps | 297.43 | 30.58 | 76 | 4674 | 13124 | 110571425 |
| Rhinitis allergic | 279.01 | 30.58 | 77 | 4673 | 17845 | 110566704 |
| Schizophrenia | 277.33 | 30.58 | 80 | 4670 | 21746 | 110562803 |
| Cardiac murmur | 250.52 | 30.58 | 76 | 4674 | 24552 | 110559997 |
| Bronchiectasis | 221.13 | 30.58 | 76 | 4674 | 36417 | 110548132 |
| Psychotic disorder | 214.38 | 30.58 | 81 | 4669 | 50856 | 110533693 |
| Lung neoplasm malignant | 203.16 | 30.58 | 70 | 4680 | 33772 | 110550777 |
| Hepatotoxicity | 193.78 | 30.58 | 80 | 4670 | 63320 | 110521229 |
| Cholelithiasis | 193.75 | 30.58 | 80 | 4670 | 63342 | 110521207 |
| Blood bilirubin increased | 186.29 | 30.58 | 82 | 4668 | 75890 | 110508659 |
| Chronic obstructive pulmonary disease | 155.10 | 30.58 | 81 | 4669 | 109077 | 110475472 |
| Gastrooesophageal reflux disease | 112.89 | 30.58 | 79 | 4671 | 179897 | 110404652 |
| Hepatic enzyme increased | 89.51 | 30.58 | 88 | 4662 | 320804 | 110263745 |
| Wheezing | 88.48 | 30.58 | 79 | 4671 | 255151 | 110329398 |
| Oedema peripheral | 63.09 | 30.58 | 74 | 4676 | 328586 | 110255963 |
| Condition aggravated | 54.57 | 30.58 | 106 | 4644 | 734730 | 109849819 |
| Pharyngeal paraesthesia | 43.02 | 30.58 | 13 | 4737 | 4119 | 110580430 |
| Pneumonia | 40.81 | 30.58 | 105 | 4645 | 876609 | 109707940 |
| Nausea | 38.36 | 30.58 | 128 | 4622 | 1235562 | 109348987 |
| Salpingo-oophorectomy bilateral | 36.63 | 30.58 | 7 | 4743 | 314 | 110584235 |
| Bone density abnormal | 35.20 | 30.58 | 11 | 4739 | 3892 | 110580657 |
| Spleen congestion | 33.55 | 30.58 | 7 | 4743 | 492 | 110584057 |
| Blood immunoglobulin E | 33.38 | 30.58 | 5 | 4745 | 49 | 110584500 |
None
| Source | Code | Description |
|---|---|---|
| ATC | R06AX18 | RESPIRATORY SYSTEM ANTIHISTAMINES FOR SYSTEMIC USE ANTIHISTAMINES FOR SYSTEMIC USE Other antihistamines for systemic use |
| FDA MoA | N0000000190 | Histamine H1 Receptor Antagonists |
| MeSH PA | D006633 | Histamine Antagonists |
| MeSH PA | D006634 | Histamine H1 Antagonists |
| MeSH PA | D018377 | Neurotransmitter Agents |
| MeSH PA | D018494 | Histamine Agents |
| MeSH PA | D039563 | Histamine H1 Antagonists, Non-Sedating |
| FDA EPC | N0000175587 | Histamine-1 Receptor Antagonist |
| CHEBI has role | CHEBI:37955 | H<small><sub>1</sub></small>-receptor antagonist |
| Disease | Relation | SNOMED_ID | DOID |
|---|---|---|---|
| Vasomotor rhinitis | indication | 8229003 | DOID:4730 |
| Allergic rhinitis | indication | 61582004 | |
| Nasal discharge | indication | 64531003 | |
| Nasal congestion | indication | 68235000 | |
| Sneezing | indication | 76067001 | |
| Common cold | indication | 82272006 | DOID:10459 |
| Seasonal allergic rhinitis | indication | 367498001 | |
| Allergic conjunctivitis | indication | 473460002 | DOID:11204 |
| Hyperthyroidism | contraindication | 34486009 | DOID:7998 |
| Hypertensive disorder | contraindication | 38341003 | DOID:10763 |
| Coronary arteriosclerosis | contraindication | 53741008 | DOID:3393 |
| Diabetes mellitus | contraindication | 73211009 | DOID:9351 |
| Benign prostatic hyperplasia | contraindication | 266569009 | |
| Retention of urine | contraindication | 267064002 | |
| Angle-closure glaucoma | contraindication | 392291006 | DOID:13550 |
| Hypertensive urgency | contraindication | 443482000 |
None
None
| Dissociation level | Dissociation constant | Type (acidic/basic) |
|---|---|---|
| pKa1 | 3.78 | acidic |
| pKa2 | 9.42 | Basic |
| pKa3 | 1.55 | Basic |
None
None
| Target | Class | Pharos | UniProt | Action | Type | Activity value (-log[M]) | Mechanism action | Bioact source | MoA source |
|---|---|---|---|---|---|---|---|---|---|
| Histamine H1 receptor | GPCR | ANTAGONIST | IC50 | 7.16 | WOMBAT-PK | CHEMBL | |||
| Multidrug resistance protein 1 | Transporter | WOMBAT-PK | |||||||
| Histamine H1 receptor | GPCR | IC50 | 5.21 | CHEMBL |
| ID | Source |
|---|---|
| 4020857 | VUID |
| N0000179060 | NUI |
| D02760 | KEGG_DRUG |
| 19959 | RXNORM |
| C0054340 | UMLSCUI |
| CHEBI:83168 | CHEBI |
| CHEMBL1224 | ChEMBL_ID |
| DB09488 | DRUGBANK_ID |
| C043648 | MESH_SUPPLEMENTAL_RECORD_UI |
| 5284514 | PUBCHEM_CID |
| 5548 | INN_ID |
| A20F9XAI7W | UNII |
| 4130 | MMSL |
| d03753 | MMSL |
| 4020857 | VANDF |
| 003921 | NDDF |
| 320813002 | SNOMEDCT_US |
| 391716003 | SNOMEDCT_US |
| A20F9XAI7W | INXIGHT DRUGS |
None