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Antihistamines

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Antihistamines are drugs that inhibit the action of histamine in the body by blocking the receptors of histamine. There are two types of histamine receptors H1 and H2. When H1 receptors are stimulated by histamine it may produce allergic reactions such as itching, hay fever and rash or hives.

Antihistamines treat the symptoms of allergic reactions. Some antihistamines are sedating and although some are classed as non-sedating antihistamines, they may still cause drowsiness in some people.

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Drug Name DownUp( View by: Brand | Generic ) Reviews Ratings DownUp
Allegra ODT (More...)
generic name: fexofenadine
1 review
   
10
Claritin Hives Relief (More...)
generic name: loratadine
2 reviews
   
10
Nolahist (More...)
generic name: phenindamine
1 review
   
10
Polaramine (More...)
generic name: dexchlorpheniramine
2 reviews
   
10
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generic name: terfenadine
2 reviews
   
10
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generic name: cetirizine
0 reviews
   
10
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generic name: triprolidine
1 review
   
9.7
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generic name: promethazine
0 reviews
   
9.5
Lodrane 24 (More...)
generic name: brompheniramine
6 reviews
   
9.4
Chlor-Trimeton (Pro, More...)
generic name: chlorpheniramine
11 reviews
   
9.2
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generic name: cetirizine
1 review
   
9.0
Compoz Nighttime Sleep Aid (More...)
generic name: diphenhydramine
2 reviews
   
9.0
Palgic (Pro, More...)
generic name: carbinoxamine
2 reviews
   
9.0
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generic name: diphenhydramine
1 review
   
9.0
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generic name: diphenhydramine
1 review
   
9.0
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generic name: chlorpheniramine
1 review
   
9.0
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generic name: cyproheptadine
38 reviews
   
8.9
Phenergan (Pro, More...)
generic name: promethazine
74 reviews
   
8.5
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generic name: fexofenadine
49 reviews
   
8.4
Promethegan (Pro, More...)
generic name: promethazine
0 reviews
   
8.4
Children's Claritin Allergy (More...)
generic name: loratadine
3 reviews
   
8.3
Xyzal (Pro, More...)
generic name: levocetirizine
74 reviews
   
8.2
Benadryl Children's Allergy (Pro, More...)
generic name: diphenhydramine
0 reviews
   
8.0
Nytol (More...)
generic name: diphenhydramine
3 reviews
   
8.0
Antinaus 50 (More...)
generic name: promethazine
0 reviews
   
7.7
Calm-Aid (More...)
generic name: diphenhydramine
0 reviews
   
7.7
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generic name: diphenhydramine
13 reviews
   
7.6
Zyrtec (Pro, More...)
generic name: cetirizine
83 reviews
   
7.6
Benadryl (Pro, More...)
generic name: diphenhydramine
29 reviews
   
7.5
Clarinex (Pro, More...)
generic name: desloratadine
5 reviews
   
7.5
Benadryl Allergy (More...)
generic name: diphenhydramine
21 reviews
   
7.4
Allerhist-1 (More...)
generic name: clemastine
0 reviews
   
7.0
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generic name: diphenhydramine
0 reviews
   
7.0
Claritin 24 Hour Allergy (More...)
generic name: loratadine
1 review
   
7.0
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generic name: hydroxyzine
1 review
   
7.0
Sleep (More...)
generic name: diphenhydramine
0 reviews
   
7.0
Atarax (Pro, More...)
generic name: hydroxyzine
70 reviews
   
6.8
Phenadoz (Pro, More...)
generic name: promethazine
0 reviews
   
6.5
Vistaril (Pro, More...)
generic name: hydroxyzine
109 reviews
   
6.3
Unisom SleepGels (More...)
generic name: diphenhydramine
7 reviews
   
6.2
Lodrane 12 Hour (More...)
generic name: brompheniramine
0 reviews
   
6.0
Simply Sleep (More...)
generic name: diphenhydramine
11 reviews
   
6.0
Claritin (Pro, More...)
generic name: loratadine
11 reviews
   
5.7
Alavert (Pro, More...)
generic name: loratadine
1 review
   
5.5
Nytol Caplet (More...)
generic name: diphenhydramine
1 review
   
5.5
40 Winks (More...)
generic name: diphenhydramine
1 review
   
5.0
Allegra Allergy (More...)
generic name: fexofenadine
1 review
   
5.0
Tavist (More...)
generic name: clemastine
0 reviews
   
5.0
Loratadine Reditab (More...)
generic name: loratadine
1 review
   
3.0
Triaminic Thin Strips Cough & Runny Nose (More...)
generic name: diphenhydramine
0 reviews
   
3.0
Aller-Ease (More...)
generic name: fexofenadine
1 review
   
1.0
12 Hour Allergy Relief (More...)
generic name: clemastine
0 reviews
   
0.0
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generic name: dexbrompheniramine
0 reviews
   
0.0
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generic name: diphenhydramine
0 reviews
   
0.0
Aler-Tab (More...)
generic name: diphenhydramine
0 reviews
   
0.0
All Day Allergy Children's (Pro, More...)
generic name: cetirizine
0 reviews
   
0.0
Aller-Chlor (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Aller-Tec (More...)
generic name: cetirizine
0 reviews
   
0.0
Aller-Tec Children's (More...)
generic name: cetirizine
0 reviews
   
0.0
Allergy Relief (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Allergy Relief 24 Hour (More...)
generic name: loratadine
0 reviews
   
0.0
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generic name: loratadine
0 reviews
   
0.0
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generic name: diphenhydramine
0 reviews
   
0.0
Altaryl (More...)
generic name: diphenhydramine
0 reviews
   
0.0
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generic name: promethazine
0 reviews
   
0.0
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generic name: carbinoxamine
0 reviews
   
0.0
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generic name: loratadine
0 reviews
   
0.0
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generic name: diphenhydramine
0 reviews
   
0.0
Bromax (Pro, More...)
generic name: brompheniramine
0 reviews
   
0.0
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generic name: brompheniramine
0 reviews
   
0.0
Brovex CT (More...)
generic name: brompheniramine
0 reviews
   
0.0
C.P.M. (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
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generic name: carbinoxamine
0 reviews
   
0.0
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generic name: cetirizine
0 reviews
   
0.0
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generic name: loratadine
0 reviews
   
0.0
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generic name: cetirizine
0 reviews
   
0.0
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generic name: chlorpheniramine
0 reviews
   
0.0
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generic name: chlorpheniramine
0 reviews
   
0.0
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generic name: chlorpheniramine
0 reviews
   
0.0
Chlor-Trimeton Allergy SR (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Chlorphen (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
ChlorTan (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Clarinex Reditabs (More...)
generic name: desloratadine
0 reviews
   
0.0
Claritin Reditabs (More...)
generic name: loratadine
0 reviews
   
0.0
Clear-Atadine (More...)
generic name: loratadine
0 reviews
   
0.0
Clear-Atadine Children's (More...)
generic name: loratadine
0 reviews
   
0.0
Complete Allergy Relief (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Contac 12 Hour Allergy (More...)
generic name: clemastine
0 reviews
   
0.0
Cordron NR (More...)
generic name: carbinoxamine
0 reviews
   
0.0
Dayhist Allergy (More...)
generic name: clemastine
0 reviews
   
0.0
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generic name: diphenhydramine
0 reviews
   
0.0
Dimetane Extentab (More...)
generic name: brompheniramine
0 reviews
   
0.0
Dimetapp Allergy (More...)
generic name: brompheniramine
0 reviews
   
0.0
Dimetapp Children's ND Non-Drowsy Allergy (Pro, More...)
generic name: loratadine
0 reviews
   
0.0
Diphedryl (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Diphen (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Diphen Cough (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Diphenhist (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Dytan (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Dytuss (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Ed-Chlortan (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Ed Chlor-Tan (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Ed ChlorPed (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Genahist (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Hismanal (More...)
generic name: astemizole
0 reviews
   
0.0
Histex CT (More...)
generic name: carbinoxamine
0 reviews
   
0.0
Histex IE (More...)
generic name: carbinoxamine
0 reviews
   
0.0
Histex PD (More...)
generic name: carbinoxamine
0 reviews
   
0.0
Histex PD Drops (More...)
generic name: triprolidine
0 reviews
   
0.0
Histex Syrup (More...)
generic name: triprolidine
0 reviews
   
0.0
Hydramine (More...)
generic name: diphenhydramine
0 reviews
   
0.0
J-Tan (More...)
generic name: brompheniramine
0 reviews
   
0.0
J-Tan PD (More...)
generic name: brompheniramine
0 reviews
   
0.0
Karbinal ER (Pro, More...)
generic name: carbinoxamine
0 reviews
   
0.0
Leader Allerhist (More...)
generic name: clemastine
0 reviews
   
0.0
LoHist-12 (More...)
generic name: brompheniramine
0 reviews
   
0.0
Nu-Med (More...)
generic name: diphenhydramine
0 reviews
   
0.0
ohm Allergy Relief (More...)
generic name: loratadine
0 reviews
   
0.0
Optimine (More...)
generic name: azatadine
0 reviews
   
0.0
PBZ (More...)
generic name: tripelennamine
0 reviews
   
0.0
PBZ-SR (More...)
generic name: tripelennamine
0 reviews
   
0.0
PediaCare Children's Allergy (More...)
generic name: diphenhydramine
0 reviews
   
0.0
PediaTan (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Pediatex (More...)
generic name: carbinoxamine
0 reviews
   
0.0
Pediatex 12 (More...)
generic name: carbinoxamine
0 reviews
   
0.0
Pediox (More...)
generic name: carbinoxamine
0 reviews
   
0.0
Poly-Histine (More...)
generic name: pheniramine/phenyltoloxamine/pyrilamine
0 reviews
   
0.0
Q-Dryl A / F (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Quenalin (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Rezine (More...)
generic name: hydroxyzine
0 reviews
   
0.0
Ricobid H (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Scot-Tussin Allergy (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Siladryl (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Siladryl Allergy (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Silphen Cough (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Siltane (More...)
generic name: brompheniramine
0 reviews
   
0.0
Sleep-ettes (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Sleep-ettes D (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Sleepinal (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Sominex Maximum Strength Caplet (More...)
generic name: diphenhydramine
0 reviews
   
0.0
TanaHist-PD (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Tavist-1 (More...)
generic name: clemastine
0 reviews
   
0.0
Tavist Allergy (More...)
generic name: clemastine
0 reviews
   
0.0
Tavist ND (More...)
generic name: loratadine
0 reviews
   
0.0
Theraflu Thin Strips Multi Symptom (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Topco Allergy (More...)
generic name: chlorpheniramine
0 reviews
   
0.0
Tranquil Nighttime Sleep Aid (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Tri-Histine (More...)
generic name: pheniramine/phenyltoloxamine/pyrilamine
0 reviews
   
0.0
Triaminic Thin Strips Allergy (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Tripohist (More...)
generic name: triprolidine
0 reviews
   
0.0
Twilite (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Valu-Dryl (More...)
generic name: diphenhydramine
0 reviews
   
0.0
Vanahist PD (More...)
generic name: triprolidine
0 reviews
   
0.0
VaZol (More...)
generic name: brompheniramine
0 reviews
   
0.0
Vicks QlearQuil All Day & All Night 24 Hour Allergy Relief (More...)
generic name: loratadine
0 reviews
   
0.0
Wal-itin (More...)
generic name: loratadine
0 reviews
   
0.0
Zymine XR (More...)
generic name: triprolidine
0 reviews
   
0.0
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