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Chlorpheniramine: Oral tablet, extended release 12 hour

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  • Reported side effects
  • Daily life interactions
Available Strengths
Drug Image file DrugItem_16301.JPG
Chlorpheniramine 12mg ER Tab
KVK-Tech, Inc.
Pill Identification: ALLERGY 12 
Drug Image file DrugItem_17604.JPG
Allergy 12mg ER Tablet
Cardinal Health, Inc.
Pill Identification: ALLERGY 12 
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How This Drug Works
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Antihistamines, H1
Histamine antagonists or antihistamines are drugs that relieve allergy symptoms. Histamine is a chemical used to identify and remove substances that trigger an allergic response.
Antihistamines, H1
Histamine antagonists or antihistamines are drugs that relieve allergy symptoms.<br><br>Histamine is a chemical used to identify and remove substances that trigger an allergic response.  There are four histamine receptors &#40;designated H<sub>1</sub>, H<sub>2</sub>, H<sub>3</sub>, H<sub>4</sub>&#41;. When histamine activates H<sub>1</sub> receptors, symptoms such as rashes, itching, watery eyes and trouble breathing may begin. <br><br>Antihistamines prevent histamine from stimulating the H<sub>1</sub> receptors located in the eyes, nose and throat to relieve swelling and stop leaking fluid.  First generation antihistamines were non-selective for H<sub>1</sub> receptors and crossed into the brain resulting in drowsiness.  Newer antihistamines are more selective, reducing this side effect.
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Frequently Asked Questions (FAQs) on Chlorpheniramine: Oral tablet, extended release 12 hour
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What is this medicine?

CHLORPHENIRAMINE (klor fen IR a meen) is an antihistamine. It is used to treat sneezing, runny nose, and itchy, watery eyes from allergies or a cold. It is also used to treat the symptoms an allergic reaction. This medicine will not treat an infection.


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Drugs Related by Class to Chlorpheniramine: Oral tablet, extended release 12 hour
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Previous Class name
Class Name : First generation (sedating) Antihistamines

Related Brand Name Drugs :

AHIST: Oral tablet  |  Aldex AN: Chewable tablet  |  Alka-Seltzer Plus Allergy: Oral tablet  |  Arbinoxa: Oral solution  |  Arbinoxa: Oral tablet  |  Atarax: Oral solution  |  Atarax: Oral tablet  |  Benadryl Allergy Children's: Oral solution  |  Benadryl Allergy Dye Free: Oral capsule  |  Benadryl Allergy Dye Free: Oral capsule, liquid filled  |  Benadryl Allergy Kapgel: Oral tablet  |  Benadryl Allergy Ultratab: Oral tablet  |  Benadryl Allergy: Oral capsule  |  Benadryl Allergy: Oral solution  |  Benadryl Children's Allergy Fastmelt: Oral disintegrating tablet  |  Benadryl Children's Allergy: Chewable tablet  |  Benadryl Children's Allergy: Oral solution  |  Benadryl Children's Perfect Measure: Oral solution  |  Benadryl: Solution for injection  |  Benadryl: Topical cream  |  Benadryl: Topical solution  |  Benadryl: Topical spray, solution  |  BroveX CT: Chewable tablet  |  Chlor-Trimeton Allergy 12 Hour: Oral tablet, extended release 12 hour  |  Chlor-Trimeton Allergy: Oral tablet  |  Chlor-Trimeton: Oral tablet  |  Chlorphen SR: Oral tablet, extended release 12 hour  |  Doxytex: Oral solution  |  ElixSure Allergy: Oral solution  |  Histex PD: Oral solution  |  Lodrane: Oral capsule  |  Lodrane: Oral tablet, extended release  |  Nytol: Oral capsule, liquid filled  |  Nytol: Oral tablet  |  Palgic: Oral solution  |  Palgic: Oral tablet  |  PediaCare Children's Allergy: Oral solution  |  PediaCare Nighttime Cough: Oral solution  |  Pediox: Oral solution  |  Periactin: Oral tablet  |  Respa-BR: Oral tablet, extended release  |  RyVent: Oral tablet  |  Tavist Allergy: Oral tablet  |  Unisom: Oral capsule, liquid filled  |  Unisom: Oral disintegrating tablet  |  Unisom: Oral tablet  |  VANAHIST PD: Oral solution  |  VanaClear PD: Oral solution  |  Vanamine PD: Oral solution  |  Vistaril: Oral capsule  |  Vistaril: Oral suspension  |  Vistaril: Solution for injection
Most Commonly Used Drugs by Class

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CVS Pharmacy Patient Statistics for Chlorpheniramine: Oral tablet, extended release 12 hour
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Usage by Gender
68.33%
31.67%
Generic vs. Brand Name Usage*
*Brand contains same active ingredient but may not represent FDA-approved generic equivalent
Usage by Age
2.0%
15.33%
42.67%
40.0%
In-Depth Information on This Drug
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Patient Experiences with Chlorpheniramine

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