Antiallergic drugs

Allergic reaction refers to the tissue injury or physiological disorders caused by the stimulation of the bodies through antigenic substances (such as bacteria, viruses, parasites, pollen, etc.), belonging to abnormal or pathological immune response. Drugs used for the prevention and treatment of allergic diseases are called as antiallergic agents.
Such kinds of drugs include:
1. anti-histamine drug which mainly includes histamine H1 receptor antagonists, such as promethazine, diphenhydramine, etc., it can compete with histamine to bind to the histamine H1 receptor in the effector cells, disabling the histamine from binding to the H1 receptors, thereby inhibiting its role in causing allergic reactions. In addition, histamine decarboxylation inhibitor also belongs to antihistamines.
2. Allergic reaction medium inhibitor-releasing agent; it can stabilize mast cell membrane, preventing the release of histamine and related allergic reactions medium (such as slow-reacting substance bradykinin) for producing allergic reactions, such as cromolyn sodium and the like.
3. Other anti-allergic agents, including calcium salts such as calcium chloride, calcium gluconate; desensitizing agents, such as dust, mites injection; corticosteroids, such as prednisone.

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Structure Chemical Name CAS MF
Olopatadine Olopatadine 113806-05-6 C21H23NO3
Desloratadine Desloratadine 100643-71-8 C19H19ClN2
Loratadine Loratadine 79794-75-5 C22H23ClN2O2
Fexofenadine Fexofenadine 83799-24-0 C32H39NO4
Diphenhydramine Hydrochloride Diphenhydramine Hydrochloride 147-24-0 C17H22ClNO
Ebastine Ebastine 90729-43-4 C32H39NO2
Chlorpheniramine maleate Chlorpheniramine maleate 113-92-8 C20H23ClN2O4
Cetirizine hydrochloride Cetirizine hydrochloride 83881-52-1 C21H26Cl2N2O3
Roxatidine acetate Roxatidine acetate 78628-28-1 C19H28N2O4
Ketotifen fumarate Ketotifen fumarate 34580-14-8 C23H23NO5S
Sodium cromoglycate Sodium cromoglycate 15826-37-6 C23H14O11.2Na
Ibudilast Ibudilast 50847-11-5 C14H18N2O
Levocetirizine dihydrochloride Levocetirizine dihydrochloride 130018-87-0 C21H27Cl3N2O3
Azelastine hydrochloride Azelastine hydrochloride 79307-93-0 C22H25Cl2N3O
Zafirlukast Zafirlukast 107753-78-6 C31H33N3O6S
Tranilast Tranilast 53902-12-8 C18H17NO5
Clemastine fumarate Clemastine fumarate 14976-57-9 C25H30ClNO5
Pemirolast potassium Pemirolast potassium 100299-08-9 C10H7KN6O
Promethazine hydrochloride Promethazine hydrochloride 58-33-3 C17H21ClN2S
Brompheniramine Brompheniramine 86-22-6 C16H19BrN2
MECLIZINE HYDROCHLORIDE (500 MG) MECLIZINE HYDROCHLORIDE (500 MG) 31884-77-2 C25H27ClN2.2ClH.H2O
AzatadineMaleate AzatadineMaleate 3964-81-6 C20H22N22C4H4O4
Epinastine Epinastine 80012-43-7 C16H15N3
Brompheniramine hydrogen maleate Brompheniramine hydrogen maleate 980-71-2 C20H23BrN2O4
Oxatomide Oxatomide 60607-34-3 C27H30N4O
Cetirizine Cetirizine 83881-51-0 C21H25ClN2O3
AZATADINE MALEATE (200 MG) AZATADINE MALEATE (200 MG) 3978-86-7 C28H30N2O8
PYRILAMINE MALEATE PYRILAMINE MALEATE 59-33-6 C21H27N3O5
CARBINOXAMINE MALEATE SALT CARBINOXAMINE MALEATE SALT 3505-38-2 C20H23ClN2O5
Dimenhydrinate Dimenhydrinate 523-87-5 C17H21NO.C7H7ClN4O2
EPINASTINE HYDROCHLORIDE EPINASTINE HYDROCHLORIDE 108929-04-0 C16H16ClN3
MEQUITAZINE MEQUITAZINE 29216-28-2 C20H22N2S
Cloperastine hydrochloride Cloperastine hydrochloride 14984-68-0 C20H25Cl2NO
PEMIROLAST PEMIROLAST 69372-19-6 C10H8N6O
Diphenhydramine Diphenhydramine 58-73-1 C17H21NO
Setastine Setastine 64294-95-7 C22H28ClNO
Triprolidine hydrochloride Triprolidine hydrochloride 6138-79-0 C19H23ClN2
Azelastine Azelastine 58581-89-8 C22H24ClN3O
Amlexanox Amlexanox 68302-57-8 C16H14N2O4
DOXYLAMINE DOXYLAMINE 469-21-6 C17H22N2O
DIMETHINDENE MALEATE DIMETHINDENE MALEATE 3614-69-5 C24H28N2O4
Cyproheptadine hydrochloride Cyproheptadine hydrochloride 41354-29-4 C21H22ClN
Astemizole Astemizole 68844-77-9 C28H31FN4O
TRIPELENNAMINE HYDROCHLORIDE TRIPELENNAMINE HYDROCHLORIDE 154-69-8 C16H22ClN3
Acrivastine Acrivastine 87848-99-5 C22H24N2O2
Terfenadine Terfenadine 50679-08-8 C32H41NO2
Triprolidine Triprolidine 486-12-4 C19H22N2
Levoceitrizine Hcl Levoceitrizine Hcl
Epinastine hydrochloride Epinastine hydrochloride 80012-44-8 C16H16ClN3
Decloxizine Decloxizine 3733-63-9 C21H28N2O2
Cromoglicic acid Cromoglicic acid 16110-51-3 C23H16O11
Meclizine dihydrochloride Meclizine dihydrochloride 1104-22-9 C25H29Cl3N2
Doxylamine succinate Doxylamine succinate 562-10-7 C21H28N2O5
Pheniramine maleate Pheniramine maleate 132-20-7 C20H24N2O4
Histapyrrodine Histapyrrodine
Etymemazine Etymemazine 523-54-6 C20H26N2S
azelastine hydrochloride azelastine hydrochloride 153408-27-6 C22H24ClN3O·HCl
Trimeprazine Trimeprazine 84-96-8 C18H22N2S
DIMETHINDENE DIMETHINDENE 5636-83-9 C20H24N2
phenyltoloxamine  phenyltoloxamine 92-12-6 C17H21NO
deptropine deptropine 604-51-3 C23H27NO
LODOXAMIDE LODOXAMIDE
tolpropamine tolpropamine 5632-44-0 C18H23N
thonzylamine  thonzylamine 91-85-0 C16H22N4O
Clemastine Clemastine
Hydroxydiethylphenamine Hydroxydiethylphenamine 13073-96-6 C21H28N2O2.2ClH
LEVOCABASTINE LEVOCABASTINE 79516-68-0 C26H29FN2O2
CLOPERASTINE CLOPERASTINE 3703-76-2 C20H24ClNO
CYPROHEPTADINE HYDROCHLORIDE CYPROHEPTADINE HYDROCHLORIDE 969-33-5 C21H22ClN
Meclozine Meclozine 569-65-3 C25H27ClN2
Dimetotiazine Dimetotiazine 7456-24-8 C19H25N3O2S2
phenindamine phenindamine 82-88-2 C19H19N
thenyldiamine thenyldiamine 91-79-2 C14H19N3S
Chloropyrilene Chloropyrilene 148-65-2 C14H18ClN3S
Diphenazoline Diphenazoline
Pheniramine Pheniramine 86-21-5 C16H20N2
ZAPRINAST ZAPRINAST 37762-06-4 C13H13N5O2
TRANILAST TRANILAST 53902-17-3 C18H17NO5
CLEMASTINE FUMARATE CLEMASTINE FUMARATE 15686-51-8 C25H30ClNO5
Diphenhydramine citrate Diphenhydramine citrate 88637-37-0 C23H29NO8
carbinoxamine carbinoxamine 486-16-8 C16H19ClN2O
promethazine teoclate promethazine teoclate 17693-51-5 C17H20N2S.C7H7ClN4O2
Phenyltoloxamine citrate Phenyltoloxamine citrate 1176-08-5 C23H29NO8
Chloropyramine Chloropyramine 59-32-5 C16H20ClN3
Tripelennamine Tripelennamine 91-81-6 C16H21N3
DEXBROMPHENIRAMINE DEXBROMPHENIRAMINE 132-21-8 C16H19BrN2
azelastine hydrochloride azelastine hydrochloride 153408-28-7 C22H24ClN3O·HCl
PYRILAMINE PYRILAMINE 91-84-9 C17H23N3O
propiomazine propiomazine 362-29-8 C20H24N2OS
DEXCHLORPHENIRAMINE MALEATE DEXCHLORPHENIRAMINE MALEATE 2438-32-6 C20H23ClN2O4
Tiaramide Tiaramide 32527-55-2 C15H18ClN3O3S
thenalidine thenalidine 86-12-4 C5H6N2S
Decloxizin HCL CP2000 Decloxizin HCL CP2000
DIOXOPROMETHAZINE HCL DIOXOPROMETHAZINE HCL 13754-56-8 C17H17ClN2O2S
Cyclizine Cyclizine
DIPICRYLAMINE DIPICRYLAMINE 131-73-7 C12H5N7O12
DEXCHLORPHENIRAMINE DEXCHLORPHENIRAMINE 25523-97-1 C16H19ClN2
PROMETHAZINE PROMETHAZINE 60-87-7 C17H20N2S
N-2-(4-bromobenzhydryloxy)ethyldimethylamine N-2-(4-bromobenzhydryloxy)ethyldimethylamine 118-23-0 BrN2 4*
thiazinamium metilsulfate thiazinamium metilsulfate 58-34-4 C18H23N2S.CH3O4S
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