Which Drug Is Used as an Antihistamine?

Reviewed on 12/13/2021

What Are Antihistamines?

Antihistamines are medications used to treat allergy symptoms. Allergy medicines include drugs such as Brompheniramine (Children's Dimetapp Cold), Carbinoxamine (RyVent, Karbinal ER), Chlorpheniramine (Chlor-Trimeton, Actifed Cold), Clemastine (Dayhist, Dayhist Allergy), Dexchlorpheniramine  Dimenhydrinate (Dramamine), Cetirizine (Zyrtec), Fexofenadine (Allegra), Loratadine (Alavert, Claritin), and others.
Antihistamines are medications used to treat allergy symptoms. Allergy medicines include drugs such as Brompheniramine (Children’s Dimetapp Cold), Carbinoxamine (RyVent, Karbinal ER), Chlorpheniramine (Chlor-Trimeton, Actifed Cold), Clemastine (Dayhist, Dayhist Allergy), Dexchlorpheniramine Dimenhydrinate (Dramamine), Cetirizine (Zyrtec), Fexofenadine (Allegra), Loratadine (Alavert, Claritin), and others.

Antihistamines are medications used to treat allergy symptoms. When the body is exposed to allergens, it produces a chemical in the body called histamine which is released to attack the allergens. But histamines cause symptoms such as itching, runny nose, sneezing, hives, and itchy and watery eyes associated with allergies

Antihistamines may also be used to treat other conditions such as: 

Depending on the specific drug and its use, antihistamines are available as pills, liquids, nasal sprays, gels, and eye drops. Many are available over-the-counter (OTC) and some require a doctor’s prescription. 

What Are Examples of Antihistamine Drugs?

Allergy Medicine List

There are two types of antihistamines: 

Often, antihistamines are mixed with other medicines such as pain relievers or decongestants, used to treat multiple symptoms at once. If you do not need medicine to relieve pain or congestion, it is better to only take the medications you need and not anything extra. Consult your doctor or pharmacist before taking an antihistamine or a combination medicine that contains an antihistamine. 

What Are the Side Effects of Antihistamines?

Common side effects of antihistamines include: 

  • Drowsiness (more pronounced in first-generation antihistamines)
  • Dry mouth
  • Dry nose
  • Dizziness
  • Nausea 
  • Vomiting
  • Confusion
  • Blurred vision
  • Irritability
  • Headache

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Reviewed on 12/13/2021
References
Image Source: iStock Images

https://familydoctor.org/antihistamines-understanding-your-otc-options/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3650962/

https://www.aocd.org/page/Antihistamines