Allergy Drugs: Antihistamines
Brompheniramine (BroveX, BroveX CT, Lodrane 12 Hour ER Tablet)
Chlorpheniramine (Aller-Chlor, Allergy, Chlo-Amine, Chlor-Trimeton, Chlor-Trimeton Allergy, Efidac 24)
Promethazine Oral (Phenergan)
Azelastine Nasal Spray (Astelin)
Fexofenadine (Allegra)
Loratadine (Alavert, Claritin)
Dexchlorpheniramine oral syrup
Desloratadine (Clarinex)
Brompheniramine Oral Suspension (BroveX Oral Suspension)
Cetirizine (Zyrtec)
Clemastine (Dayhist-1, Tavist, Tavist Allergy)
Diphenhydramine Oral (AllerMax, Banophen, Benadryl, Diphenhist, Genahist)
Dexchlorpheniramine ER
Carbinoxamine (Histex CT)
HOW DO THESE DRUGS WORK?
Antihistamines work by preventing histamine from binding to histamine receptors. This prevents the release of chemicals in cells that cause allergy symptoms.
WHAT ARE THE BENEFITS?
This class of allergy medications is effective in reducing the symptoms of sneezing, itchiness, and a runny nose.
POTENTIAL SIDE EFFECTS
- Drowsiness
- Dizziness
- Headache
- Loss of appetite
- Stomach upset
- Vision changes
- Irritability
- Dry mouth
- Dry eyes
- Dry nose
- Unusual restlessness or nervousness in children
MAJOR CAUTIONS
- Breathing difficulties
- Pounding or irregular heartbeat
- Ringing in the ears
- Difficulty urinating
- Seizures
KNOWN DRUG INTERACTIONS
- Barbiturate medicines
- Doxercalciferol (Hectorol)
- Anxiety medications
- Antidepressants and other psychiatric medications
- Parkinson’s disease medications
Additional drug interactions for fexofenadine (Allegra):
- Antacids
- Erythromycin
- Grapefruit, apple, or orange juice
- Ketoconazole (Nizoral)
- Rifampin (Rifadin, Rimactane)
FOOD OR SUPPLEMENT INTERACTIONS
- Alcohol: can magnify drowsiness or dizziness of allergy medications
- St. John’s wort specifically for fexofenadine (Allegra)
NUTRIENT DEPLETION/IMBALANCE
None known.
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Tags: allegra, allergy, antihistamines, brovex, chlor, dizziness, drowsiness, fexofenadine, histamine, interactions, medications, suspension, symptoms, tavist, trimeton