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Antihistamines
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Generic Name
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Brand Name
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Class
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Use
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Dosage
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Acrivastine
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Semprex-D Capsules
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Antihistamine
Decongestant
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Allergic rhinitis
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Age 12 and above, one capsule every 4 to 6 hours.
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Brompheniramine
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This generic medication appears in several combination products under a variety of different names.
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Antihistamine
OTC
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Allergic rhinitis and other allergies
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Read package label or discuss the proper dosing with your physician.
Children under 6: discuss use with physician.
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Carbinoxamine
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4mg Tablets
Liquid (4mg/5 mL)
generic
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Antihistamine
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Seasonal and perennial allergic rhinitis
Other allergies
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Tablets
Adults: 1 to 2 tablets, 3 to 4 times a day.
Age 6 to 11: ½ to 1 tablet; 3 to 4 times a day.
Liquid
Adults: 1-2 teaspoons; 3 to 4 times a day.
Children older than 6: ½ to 1 teaspoon; 3 to 4 times a day.
Ask physician for dose under 6.
Do not use under age 2.
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Cetirizine
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Adults:
Zyrtec
Children:
Zyrtec Allergy Syrup
Zyrtec Chewable 5mg
Zyrtec Chewable 10mg
Zyrtec Hives Relief Syrup
Zyrtec Website
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Antihistamine
OTC
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Seasonal and perennial allergic rhinitis
Chronic urticaria
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Children:
6 to 12 months: 1/2 tsp. (2.5 mg) once a day.
1 to 5 years: 1/2 tsp. [2.5 mg] Once or twice a day.
6 to 11 years: 1 or 2 tsp. [5 or 10 mg] Once a day.
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Also appears as the generic cetirizine tablets and syrup as well as store brands of cetirizine.
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12 and older: 5 or 10 mg once a day.
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Zyrtec-D 12 Hour
Zyrtec-D Package Insert
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Antihistamine
Decongestant
OTC
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Seasonal and perennial allergic rhinitis
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Age 12 and older:
One tablet twice daily.
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Chlorpheniramine
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Sold as
Chlor-Trimeton and under various store brand names or in combination products.
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Antihistamine
OTC
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Allergic rhinitis and other allergies
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Discuss proper adult dosing with your physician.
Under age 6: Discuss use with physician.
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Clemastine
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Generic 1.34 Tab
Generic 2.68 Tab
Generic Syrup 0.5mg/5 mL
Tavist Allergy
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Antihistamine
OTC (Syrup & 1.34mg tab)
Rx (2.68 tab)
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Allergic rhinitis
Urticaria
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Children: 1 tsp twice a day.
Adults: 1.34 to 2.68 one to three times daily.
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Cyproheptadine
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Generic Syrup
2mg/5mL
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Antihistamine
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Allergic rhinitis
Urticaria
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Children:
2 to 6 years old:
0.25 mg/kg/day increasing to total of 2mg every 8 to 12 hours.
Age 7 to 14:
Can increase to 4 mg every 8 to 12 hours.
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Generic Tablets
4 mg
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Adults:
Allergic rhinitis 4 mg up to 3 times a day.
Urticaria: 4 mg/3 times a day up to 0.5 mg/kg/day.
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Desloratadine
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Clarinex 5mg Tablets
Clarinex 5mg Reditab
Clarinex 2.5mg Reditab
Clarinex 2.5mg/5 mL Syrup
Clarinex Website
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Antihistamine
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Seasonal allergic rhinitis:
Age 2 and older
Perennial allergic rhinitis: 6 months and older
Chronic urticaria:
6 months and older
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Age 12 and older: 5 mg daily.
Age 6 to 11: 2.5mg daily.
Age 6 to 11 months: 2 mL = 1.0 mg daily.
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Clarinex-D 12 Hour
Clarinex-D 14 Hour
Clarinex and Clarinex D Website
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Antihistamine
Decongestant
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Seasonal allergic rhinitis age 12 and older
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Age 12 and older:
Clarinex-D 12 Hour: 1 tablet every 12 hours.
Clarinex-D 24 Hour: 1 tablet once a day.
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Diphenhydramine
Benadryl Website
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Available as:
Generic
Benadryl
Various combination products
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Antihistamine
OTC
Rx (50mg)
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Seasonal allergic rhinitis
Urticaria
Motion sickness
Insomnia
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Age 2 to 6:
Under physician’s supervision.
Age 6 to 12:
12.5 to 25 mg every 4 to 6 hours.
Adults:
25 to 50 mg every 4 to 6 hours.
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Fexofenadine
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Allegra
30, 60 and 180 mg tablets
Allegra ODT 30 mg
Allegra Oral Suspension 30mg/5mL
Fexofenadine (generic)
30, 60 and 180 mg tablets
Allegra Website
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Antihistamine
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Seasonal allergic rhinitis
Chronic urticaria
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Allegra Oral Suspension:
Allegra ODT:
Allegra Tablets:
Seasonal allergic rhinitis
Chronic urticaria
12 and older
60 mg twice daily or 180 mg once a day
Age 6 to 11:
30 mg twice a day
Seasonal allergic rhinitis
Chronic urticaria:
Age 6 to 11:
One 30 mg ODT twice a day
Seasonal allergic rhinitis
Age 2 to 11:
30 mg twice a day
Chronic urticaria
Age 6 months to 2 years:
15 mg twice a day
Age 2 to 11:
30 mg twice a day
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Allegra-D 12 Hour
Allegra-D 24 hour
Allegra-D Package Insert
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Antihistamine
Decongestant
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Seasonal allergic rhinitis
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Age 12 and older:
One tablet twice a day
The 24-hour tablet is one a day.
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Hydroxyzine
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Hydroxyzine HCl:
Tablets: 10,25 and 50 mg
Hydroxyzine HCl Syrup: 10 mg/5 mL
Hydroxyzine Pamoate and Vistaril:
Capsules 10, 25 and 50 mg
Oral Suspension: 25 mg/5 Ml
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Antihistamine
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Itching associated with skin allergies
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Under 6: Discuss with physician.
Ages 6 to 12: 12.5 to 25 mg every 6 to 8 hours.
Age 12 and older: 25 to 50 mg every 6 to 8 hours.
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Levocetirizine
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Xyzal 5mg Tablet
Xyzal Oral Solution
(2.5mg = 5 mL)
Xyzal Website
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Antihistamine
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Seasonal and perennial allergic rhinitis
Chronic urticaria
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Age 6 to 11: 1 teaspoon (5 mL) or ½ tablet once a day in PM.
Age 12 and older:
2 teaspoons (10mL) or 1 tablet each PM.
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Loratadine
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Alavert Tablets
Claritin Tablets
Claritin RediTabs
Claritin Syrup
Generic versions
Alavert Website
Claritin Website
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Antihistamine
OTC
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Allergic rhinitis
Chronic urticaria
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Age 2 to 6: 5 mg daily.
Age 7 and above: 10 mg daily.
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Claritin-D 12 Hour
Claritin-D 24 Hour
Claritin-D Information
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Antihistamine
Decongestant
OTC
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Allergic rhinitis
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Claritin D12 Hour: Age 12 and above, one tablet twice daily.
Claritin D24 Hour: One tablet daily in the AM.
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