Triprolidine

Triprolidine
Systematic (IUPAC) name

2-[(E)-1-(4-methylphenyl)-3-pyrrolidin-1-yl- prop-1-enyl]pyridine
Clinical data
AHFS/Drugs.com	monograph
Pregnancy category	C (US)
Routes of administration	Oral
Legal status	OTC (US)
Pharmacokinetic data
Bioavailability	4% oral
Protein binding	90%
Metabolism	Hepatic (CYP2D6)
Biological half-life	4-6 hours
Excretion	Renal
Identifiers
CAS Number	486-12-4^Y
ATC code	R06AX07 (WHO)
PubChem	CID 5282443
IUPHAR/BPS	1228
DrugBank	DB00427^Y
ChemSpider	4445597^Y
UNII	2L8T9S52QM^Y
KEGG	D01782^N
ChEBI	CHEBI:84116^N
ChEMBL	CHEMBL855^Y
Chemical data
Formula	C₁₉H₂₂N₂
Molar mass	278.391 g/mol
SMILES n3c(\C(=C\CN1CCCC1)c2ccc(cc2)C)cccc3
InChI InChI=1S/C19H22N2/c1-16-7-9-17(10-8-16)18(19-6-2-3-12-20-19)11-15-21-13-4-5-14-21/h2-3,6-12H,4-5,13-15H2,1H3/b18-11+^Y Key:CBEQULMOCCWAQT-WOJGMQOQSA-N^Y
Physical data
Melting point	60 °C (140 °F)
Solubility in water	500 mg/mL (20 °C)
^NY (what is this?) (verify)

Triprolidine (Actidil, Myidil, Actifed[In combination with pseudoephedrine, and either dextromethorphan or guaifenesin] in addition in liquids) is an over-the-counter antihistamine with anticholinergic properties.^[1] It is used to combat the symptoms associated with allergies and is sometimes combined with other cold medications designed to provide general relief for flu-like symptoms.^[2] Like many antihistamines, the most common side effect is drowsiness.^[1] Triprolidine is a quick acting drug that can clear congestion and stop runny noses in 15–30 minutes.

References

1 2 Goldsmith, P.; Dowd, P. M. (1993). "The new H1 antihistamines. Treatment of urticaria and other clinical problems". Dermatologic clinics 11 (1): 87–95. PMID 8094649.
↑ Williams, B. O.; Liao, S. H.; Lai, A. A.; Arnold, J. D.; Perkins, J. G.; Blum, M. R.; Findlay, J. W. (1984). "Bioavailability of pseudoephedrine and triprolidine from combination and single-ingredient products". Clinical pharmacy 3 (6): 638–643. PMID 6509877.

Antihistamines (R06)

Aminoalkyl ethers	Bromazine (bromodiphenhydramine) Carbinoxamine Clemastine Chlorphenoxamine Diphenylpyraline Diphenhydramine Doxylamine Orphenadrine Phenyltoloxamine

Substituted alkylamines	Brompheniramine Chlorphenamine Dexbrompheniramine (+pseudoephedrine) Dexchlorpheniramine (+betamethasone) Dimetindene Pheniramine Talastine

Substituted ethylenediamines	Chloropyramine Histapyrrodine Mepyramine Methapyrilene Tripelennamine (pyribenzamine)

Phenothiazine derivatives	Alimemazine Fenethazine Hydroxyethylpromethazine Isothipendyl Mequitazine Methdilazine Oxomemazine Promethazine

Piperazine derivatives	Buclizine Cetirizine Levocetirizine Chlorcyclizine Cinnarizine Cyclizine Hydroxyzine Meclizine Oxatomide

Others for systemic use	Antazoline Azanator Azatadine Bamipine Cyproheptadine Deptropine Ebastine Emedastine Epinastine Ketotifen Latrepirdine Mebhydrolin Mizolastine Olopatadine Phenindamine Pimethixene Pyrrobutamine Quifenadine Rupatadine Triprolidine selective (Acrivastine Astemizole Azelastine Bilastine Desloratadine Fexofenadine Loratadine Terfenadine)

For topical use	Bamipine Chloropyramine Chlorphenoxamine Clemastine Dimetindene Diphenhydramine Isothipendyl Mepyramine Promethazine Thenalidine

Cholinergics

Receptor ligands

mACh	Agonists: 77-LH-28-1 AC-42 AC-260,584 Aceclidine Acetylcholine AF30 AF150(S) AF267B AFDX-384 Alvameline AQRA-741 Arecoline Bethanechol Butyrylcholine Carbachol CDD-0034 CDD-0078 CDD-0097 CDD-0098 CDD-0102 Cevimeline Choline cis-Dioxolane Ethoxysebacylcholine Itameline LY-593,039 L-689,660 LY-2,033,298 McNA343 Methacholine Milameline Muscarine NGX-267 Ocvimeline Oxotremorine PD-151,832 Pilocarpine RS86 Sabcomeline SDZ 210-086 Sebacylcholine Suberyldicholine Talsaclidine Tazomeline Thiopilocarpine Vedaclidine VU-0029767 VU-0090157 VU-0152099 VU-0152100 VU-0238429 WAY-132,983 Xanomeline YM-796 Antagonists: 3-Quinuclidinyl benzilate 4-DAMP Aclidinium bromide Anisodamine Anisodine Antihistamines (first-generation) (e.g., brompheniramine, chlorphenamine, cyproheptadine, dimenhydrinate, diphenhydramine, doxylamine, mepyramine (pyrilamine), phenindamine, pheniramine, promethazine, tripelennamine, triprolidine) Atropine Atropine methonitrate Atypical antipsychotics (e.g., clozapine, olanzapine, quetiapine, zotepine) Benactyzine Benzatropine (benztropine) Benzilylcholine mustard Benzydamine BIBN 99 Biperiden Bornaprine CAR-226,086 CAR-301,060 CAR-302,196 CAR-302,282 CAR-302,368 CAR-302,537 CAR-302,668 Caramiphen Cloperastine CS-27349 Cyclobenzaprine Cyclopentolate Darifenacin DAU-5884 Dimethindene Dexetimide DIBD Dicyclomine (dicycloverine) Ditran EA-3167 EA-3443 EA-3580 EA-3834 Etanautine Etybenzatropine (ethybenztropine) Flavoxate Himbacine HL-031,120 Ipratropium bromide J-104,129 Hyoscyamine Mamba toxin 3 Mamba toxin 7 Mazaticol Mebeverine Methoctramine Metixene N-Ethyl-3-piperidyl benzilate N-Methyl-3-piperidyl benzilate Orphenadrine Otenzepad Oxybutynin PBID PD-102,807 PD-0298029 Phenglutarimide Phenyltoloxamine Pirenzepine Piroheptine Procyclidine Profenamine RU-47,213 SCH-57,790 SCH-72,788 SCH-217,443 Scopolamine (hyoscine) Solifenacin Telenzepine Tetracyclic antidepressants (e.g., amoxapine, maprotiline, mianserin, mirtazapine) Tiotropium bromide Tolterodine Tricyclic antidepressants (e.g., amitriptyline, butriptyline, clomipramine, desipramine, dosulepin (dothiepin), doxepin, imipramine, lofepramine, nortriptyline, protriptyline, trimipramine) Trihexyphenidyl Tripitamine Tropatepine Tropicamide Typical antipsychotics (e.g., chlorpromazine, loxapine, thioridazine) WIN-2299 Xanomeline Zamifenacin

nACh	Agonists: 5-HIAA A-84,543 A-366,833 A-582,941 A-867,744 ABT-202 ABT-418 ABT-560 ABT-894 Acetylcholine Altinicline Anabasine Anatoxin-a AR-R17779 Butinoline Butyrylcholine Carbachol Choline Cotinine Cytisine Decamethonium Desformylflustrabromine Dianicline Dimethylphenylpiperazinium Epibatidine Epiboxidine Ethanol Ethoxysebacylcholine EVP-4473 EVP-6124 Galantamine GTS-21 Ispronicline Ivermectin Levamisole Lobeline MEM-63,908 (RG-3487) Morantel Nicotine (tobacco) NS-1738 PHA-543,613 PHA-709,829 PNU-120,596 PNU-282,987 Pozanicline Rivanicline RJR-2429 Sazetidine A SB-206553 Sebacylcholine SIB-1508Y SIB-1553A SSR-180,711 Suberyldicholine Suxamethonium (succinylcholine) TC-1698 TC-1734 TC-1827 TC-2216 TC-5214 TC-5619 TC-6683 Tebanicline Tropisetron UB-165 Varenicline WAY-317,538 XY-4083 Antagonists: 18-MAC 18-MC α-Neurotoxins (e.g., α-bungarotoxin, α-cobratoxin, α-conotoxin, many others) ABT-126 Alcuronium Allopregnanolone Amantadine Anatruxonium AQW051 Atracurium Barbiturates (e.g., pentobarbital, sodium thiopental) Bungarotoxins (e.g., α-bungarotoxin, κ-bungarotoxin) Bupropion Chandonium Chlorisondamine Cisatracurium Coclaurine Coronaridine Cyclopropane Dacuronium Decamethonium Dehydronorketamine Desflurane Dextromethorphan Dextropropoxyphene Dextrorphan Diadonium DHβE Dihydrochandonium Dimethyltubocurarine (metocurine) Dipyrandium Dizocilpine (MK-801) Doxacurium Encenicline Enflurane Esketamine Fazadinium Gallamine Halothane Hexafluronium Hexamethonium (benzohexonium) Hydroxybupropion Hydroxynorketamine Ibogaine Isoflurane Ketamine Kynurenic acid Laudexium (laudolissin) Levacetylmethadol Levomethadone Malouetine ME-18-MC Mecamylamine Memantine Methadone Methorphan (racemethorphan) Methyllycaconitine Metocurine Mivacurium Morphanol (racemorphan) Neramexane Nitrous oxide Norketamine Pancuronium bromide Pempidine Pentamine Pentolinium Phencyclidine Pipecuronium Progesterone Promegestone Radafaxine Rapacuronium Reboxetine Rocuronium Sevoflurane Surugatoxin Thiocolchicoside Toxiferine Tramadol Trimetaphan camsilate (trimethaphan camsylate) Tropeinium Tubocurarine Vanoxerine Vecuronium Xenon

Transporter ligands

CHT	Inhibitors: Hemicholinium-3 (hemicholine) Triethylcholine Enhancers: Coluracetam

VAChT	Inhibitors: Vesamicol

Enzyme modulators

ChAT	Inhibitors: 1-(-Benzoylethyl)pyridinium 2-(α-Naphthoyl)ethyltrimethylammonium 3-Chloro-4-stillbazole 4-(1-Naphthylvinyl)pyridine Acetylseco hemicholinium-3 Acryloylcholine AF64A B115 BETA CM-54,903 N,N-Dimethylaminoethylacrylate N,N-Dimethylaminoethylchloroacetate

AChE	Inhibitors: Reversible: Carbamates: Aldicarb Bendiocarb Bufencarb Caffeine Carbaryl Carbendazim Carbetamide Carbofuran Chlorbufam Chloropropham Ethienocarb Ethiofencarb Fenobucarb Fenoxycarb Formetanate Furadan Ladostigil Methiocarb Methomyl Miotine Oxamyl Phenmedipham Pinmicarb Pirimicarb Propamocarb Propham Propoxur; Stigmines: Distigmine bromide Eptastigmine Ganstigmine Neostigmine Phenserine Physostigmine Pyridostigmine bromide Quilostigmine Rivastigmine Terestigmine; Others: Acotiamide Ambenonium Donepezil Caffeine Edrophonium Galantamine Huperzine A Ipidacrine Minaprine Tacrine Zanapezil Irreversible: Organophosphates: Acephate Azinphos-methyl Bensulide Cadusafos Chlorethoxyfos Chlorfenvinphos Chlorpyrifos Chlorpyrifos-methyl Coumaphos Cyclosarin Demeton Demeton-S-methyl Diazinon Dichlorvos Dicrotophos Diisopropyl fluorophosphate Diisopropylphosphate Dimethoate Dioxathion Disulfoton EA-3148 Echothiophate Ethion Ethoprop Fenamiphos Fenitrothion Fenthion Fosthiazate GV Isofluorophate Isoxathion Malaoxon Malathion Methamidophos Methidathion Metrifonate Mevinphos Monocrotophos Naled Novichok agent Omethoate Oxydemeton-methyl Paraoxon Parathion Parathion-methyl Phorate Phosalone Phosmet Phoxim Pirimiphos-methyl Sarin Soman Tabun Tebupirimfos Temefos Terbufos Tetrachlorvinphos Tribufos Trichlorfon VE VG VM VR VX; Others: Demecarium Fasciculins (green mamba toxins) (1, 2, 3, 4) Onchidal (Onchidella binneyi) Reactivators: Asoxime Obidoxime Pralidoxime

BChE	Inhibitors: Cymserine Many of the AChE inhibitors listed above

Release modulators

Inhibitors	SNAP-25 inactivators: Botulinum toxin (A, C, E) VAMP inactivators: Botulinum toxin (B, D, F, G) Others: Bungarotoxins (β-bungarotoxin, γ-bungarotoxin)

Enhancers	LPHN agonists: α-Latrotoxin Others: Atracotoxin (e.g., robustoxin, versutoxin) Crotoxin

Others

Precursors	Choline (lecithin) Citicoline Cyprodenate Dimethylethanolamine Glycerophosphocholine Meclofenoxate (centrophenoxine) Phosphatidylcholine Phosphatidylethanolamine Phosphorylcholine Pirisudanol

Cofactors	Acetic acid Acetylcarnitine Acetyl-coA Vitamin B₅

Hallucinogens

Psychedelics
5-HT_2AR agonists

Lysergamides	1P-ETH-LAD 1P-LSD AL-LAD ALD-52 BU-LAD IP-LAD Diallyllysergamide Dimethyllysergamide Ergometrine ETH-LAD LAE-32 LPD-824 LSA LSD LSD-Pip LSH LSM-775 2-Butyllysergamide LSZ 3-Pentyllysergamide Methylergometrine Methylisopropyllysergamide Methysergide MLD-41 PARGY-LAD PRO-LAD

Phenethylamines	2-Bromomescaline 2-Methyl-MDA 2C-B 2C-B-AN 2C-B-DragonFLY 2C-B-BUTTERFLY 2C-B-FLY 2CBCB-NBOMe 2CB-Ind βk-2C-B 2C-C 2C-D 2C-E 2C-EF 2C-F 2C-G 2C-I βk-2C-I 2C-iP 2C-N 2C-O 2C-O-4 2C-P 2C-T 2C-T-2 2C-T-3 2C-T-4 2C-T-7 2C-T-8 2C-T-13 2C-T-15 2C-T-16 2C-T-17 2C-T-19 2C-T-21 2C-T-21.5 2C-T-22 2C-T-27 2C-T-28 2C-TFM 2C-YN 2CD-5EtO 25B-NBF 25C-NBF 25I-NBF 25B-NBOH 25C-NBOH 25CN-NBOH 25I-NBOH 25B-NBMD 25C-NBMD 25I-NBMD 25B-NBOMe 25C-NBOMe 25CN-NBOMe 25D-NBOMe 25E-NBOMe 25F-NBOMe 25G-NBOMe 25I-NBOMe 25N-NBOMe 25P-NBOMe 25TFM-NBOMe 3C-AL 3C-DFE 3C-E 3C-P 4C-B 4C-D 5-APB 5-EAPB 5-MAPB 5-APDB 5-MAPB 5-APDI 5-Methyl-MDA 6-APB 6-EAPB 6-MAPB 6-APDB 6-MAPDB 6-Methyl-MDA Aleph Bromo-DragonFLY Difluoroescaline Difluoromescaline DESOXY DMBMPP DMMDA DMMDA-2 DOB DOB-FLY DOC DOEF DOET DOF DOI DOiPR DOM DON DOPR DOTFM BOB BOD Escaline Fenfluramine Fluoroproscaline Ganesha HOT-2 HOT-7 HOT-17 Isoproscaline Jimscaline Lophophine Macromerine MDA MDEA MDMA Mescaline Mescaline-NBOMe Methallylescaline MMA MMDA MMDA-2 MMDA-3a MMDMA Proscaline TCB-2 TFMFly Trifluoroescaline Trifluoromescaline TMA

Piperazines	pFPP TMFPP mCPP

Tryptamines	1-Me-5-MeO-DiPT 2,N,N-TMT 4,5-DHP-α-MT 4,5-DHP-DMT 4-AcO-DALT 4-AcO-DET 4-AcO-DiPT 4-AcO-DMT 4-AcO-DPT 4-AcO-MiPT 4-HO-5-MeO-DMT 4-HO-DBT 4-HO-DPT 4-HO-MET 4-HO-MPMI 4-HO-MPT 4,N,N-TMT 4-Propionyloxy-DMT 5,6-diBr-DMT 5-AcO-DMT 5-Bromo-DMT 5-Me-MIPT 5-MeO-2,N,N-TMT 5-MeO-4,N,N-TMT 5-MeO-α,N,N-TMT 5-MeO-α-ET 5-MeO-α-MT 5-MeO-DALT 5-MeO-DET 5-MeO-DiPT 5-MeO-DMT 5-MeO-DPT 5-MeO-EiPT 5-MeO-MALT 5-MeO-MET 5-MeO-MiPT 5-MeO-MPMI 5-N,N-TMT 7,N,N-TMT α-ET α-MT α,N,N-TMT Aeruginascin Baeocystin Bufotenin DALT DBT DCPT DET DIPT DMT DPT EiPT Ethocin Ethocybin Ibogaine Iprocin MET Miprocin MiPT Norbaeocystin Noribogaine PiPT Psilocin Psilocybin Voacangine

Benzofurans	5-MeO-DiBF Dimemebfe

Others	AL-38022A ALPHA Efavirenz Lorcaserin M-ALPHA RH-34

Dissociatives
NMDAR antagonists

Arylcyclohexylamines	2-Fluorodeschloroketamine 3-HO-PCP 3-MeO-PCE 3-MeO-PCMo 3-MeO-PCP 4-MeO-PCP Arketamine Deschloroketamine Dieticyclidine Esketamine Ethketamine Eticyclidine Gacyclidine Ketamine Methoxetamine Methoxmetamine Methoxyketamine Norketamine PCPr Phencyclidine Rolicyclidine Tenocyclidine Tiletamine

Morphinans	Dextrallorphan Dextromethorphan Dextrorphan Racemethorphan Racemorphan

Diarylethylamines	Diphenidine Ephenidine Fluorolintane Methoxphenidine

Others	2-MDP 8A-PDHQ Aptiganel Budipine Delucemine Dexoxadrol Dizocilpine Etoxadrol Ibogaine Midafotel NEFA Neramexane Nitrous oxide Noribogaine Perzinfotel Remacemide Selfotel Xenon

Deliriants
mAChR antagonists

Miscellaneous

Cannabinoids
CB₁R agonists

Phytocannabinoids	Cannabinol THC (Dronabinol) THCV

Synthetic	4-HTMPIPO 5F-AB-FUPPYCA 5F-AB-PINACA 5F-ADB 5F-ADB-PINACA 5F-ADBICA 5F-AMB 5F-APINACA 5F-CUMYL-PINACA 5F-NNE1 5F-PB-22 5F-SDB-006 A-796,260 A-836,339 AB-001 AB-005 AB-CHFUPYCA AB-CHMINACA AB-FUBINACA AB-PINACA ADAMANTYL-THPINACA ADB-CHMINACA ADB-FUBINACA ADB-PINACA ADBICA ADSB-FUB-187 AM-630 AM-679 AM-694 AM-1220 AM-1221 AM-1235 AM-1241 AM-1248 AM-2201 AM-2232 AM-2233 AMB-FUBINACA APICA APINACA APP-FUBINACA CB-13 CP 47,497 CP 55,244 CP 55,940 CUMYL-PICA CUMYL-PINACA CUMYL-THPINACA DMHP EAM-2201 FAB-144 FDU-PB-22 FUB-144 FUB-APINACA FUB-JWH-018 FUB-PB-22 FUBIMINA HU-210 HU-308 JWH-007 JWH-015 JWH-018 JWH-019 JWH-030 JWH-073 JWH-081 JWH-098 JWH-116 JWH-122 JWH-149 JWH-167 JWH-182 JWH-193 JWH-198 JWH-200 JWH-203 JWH-210 JWH-250 JWH-251 JWH-398 JWH-424 JTE 7-31 JTE-907 Levonantradol MDMB-CHMICA MDMB-CHMINACA MDMB-FUBINACA MEPIRAPIM MAM-2201 MDA-19 MN-18 MN-25 NESS-0327 NESS-040C5 Nabilone Nabitan NM-2201 NNE1 Org 28611 Parahexyl PTI-1 PTI-2 PX-1 PX-2 PX-3 QUCHIC QUPIC RCS-4 RCS-8 SDB-005 SDB-006 STS-135 THC-O-acetate THC-O-phosphate THJ-018 THJ-2201 UR-144 WIN 55,212-2 XLR-11

D₂R agonists

Apomorphine
Aporphine
Bromocriptine
Cabergoline
Lisuride
Memantine
Nuciferine
Pergolide
Piribedil
Pramipexole
Ropinirole
Rotigotine
Also indirect D₂ agonists, such as dopamine reuptake inhibitors (cocaine, methylphenidate), releasing agents (amphetamine, methamphetamine), and precursors (levodopa).

GABA_AR enhancers

Inhalants
Mixed MOA

κOR agonists

Others

Histaminergics

Receptor
(ligands)

H₁	Agonists: 2-Pyridylethylamine Betahistine Histamine HTMT UR-AK49 Antagonists: First-generation: 4-Methyldiphenhydramine Alimemazine Antazoline Azatadine Bamipine Benzatropine (benztropine) Bepotastine Bromazine Brompheniramine Buclizine Captodiame Carbinoxamine Chlorcyclizine Chloropyramine Chlorothen Chlorphenamine Chlorphenoxamine Cinnarizine Clemastine Clobenzepam Clocinizine Cloperastine Cyclizine Cyproheptadine Dacemazine Decloxizine Deptropine Dexbrompheniramine Dexchlorpheniramine Dimenhydrinate Dimetindene Diphenhydramine Diphenylpyraline Doxylamine Embramine Etodroxizine Etybenzatropine (ethylbenztropine) Etymemazine Fenethazine Flunarizine Histapyrrodine Homochlorcyclizine Hydroxyethylpromethazine Hydroxyzine Isopromethazine Isothipendyl Meclozine Medrylamine Mepyramine (pyrilamine) Mequitazine Methafurylene Methapyrilene Methdilazine Moxastine Orphenadrine Oxatomide Oxomemazine Phenindamine Pheniramine Phenyltoloxamine Pimethixene Piperoxan Pipoxizine Promethazine Propiomazine Pyrrobutamine Talastine Thenalidine Thenyldiamine Thiazinamium Thonzylamine Tolpropamine Tripelennamine Triprolidine Second/third-generation: Acrivastine Alinastine Astemizole Azelastine Bamirastine Barmastine Bepiastine Bepotastine Bilastine Cabastinen Carebastine Cetirizine Clemastine Clemizole Clobenztropine Desloratadine Dorastine Ebastine Efletirizine Emedastine Epinastine Fexofenadine Flezelastine Ketotifen Latrepirdine Levocabastine Levocetirizine Linetastine Loratadine Mapinastine Mebhydrolin Mizolastine Moxastine Noberastine Octastine Olopatadine Perastine Pibaxizine Piclopastine Quifenadine Rocastine Rupatadine Setastine Talastine Temelastine Terfenadine Vapitadine Zepastine Non-generational: Atypical antipsychotics (e.g., aripiprazole, asenapine, clozapine, iloperidone, olanzapine, paliperidone, quetiapine, risperidone, ziprasidone, zotepine) Tetracyclic antidepressants (e.g., amoxapine, loxapine, maprotiline, mianserin, mirtazapine, oxaprotiline) Tricyclic antidepressants (e.g., amitriptyline, butriptyline, clomipramine, desipramine, dosulepin (dothiepin), doxepin, imipramine, iprindole, lofepramine, nortriptyline, protriptyline, trimipramine) Typical antipsychotics (e.g., chlorpromazine, flupenthixol, fluphenazine, loxapine, perphenazine, prochlorperazine, thioridazine, thiothixene) Unknown/unsorted: Belarizine Elbanizine Flotrenizine Napactadine Tagorizine Trelnarizine Trenizine

H₂	Agonists: Amthamine Betazole Dimaprit Histamine HTMT Impromidine UR-AK49 Antagonists: Bisfentidine Burimamide Cimetidine Dalcotidine Donetidine Ebrotidine Etintidine Famotidine Isolamtidine Lafutidine Lamtidine Lavoltidine (loxtidine) Lupitidine Metiamide Mifentidine Niperotidine Nizatidine Osutidine Oxmetidine Pibutidine Quisultazine (quisultidine) Ramixotidine Ranitidine Roxatidine Sufotidine Tiotidine Tuvatidine Venritidine Xaltidine Zolantidine

H₃	Agonists: α-Methylhistamine Cipralisant Histamine Imetit Immepip Immethridine Methimepip Proxyfan Antagonists: A-349,821 A-423,579 ABT-239 ABT-652 AZD5213 Betahistine Burimamide Ciproxifan Clobenpropit Conessine Enerisant GSK-189,254 Impentamine Iodophenpropit Irdabisant JNJ-5207852 MK-0249 NNC 38-1049 PF-03654746 Pitolisant SCH-79687 Thioperamide VUF-5681

H₄	Agonists: 4-Methylhistamine α-Methylhistamine Histamine OUP-16 VUF-8430 Antagonists: JNJ-7777120 Mianserin Thioperamide Toreforant VUF-6002

Transporter
(inhibitors)

VMATs

TAAR1 inactive	Amiodarone APP AZIK Bietaserpine Deserpidine Dihydrotetrabenazine Efavirenz GBR-12935 GZ-793A Ibogaine Ketanserin Lobeline Methoxytetrabenazine NBI-98854 Reserpine Rose bengal SD-809 Tetrabenazine Vanoxerine (GBR-12909)

TAAR1 active	Amphetamine Methamphetamine MDMA Phenethylamine

Enzyme
(inhibitors)

HDC	Catechin Meciadanol Naringenin Tritoqualine

HNMT	Amodiaquine Diphenhydramine Harmaline Metoprine Quinacrine SKF-91,488 Tacrine

DAO	Aminoguanidine

Others

Precursors	L -Histidine

Cofactors	Vitamin B₆

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