Antihistamines :
Antihistamines are medicines often used to relieve symptoms of allergies, such as hay fever, hives,
conjunctivitis and reactions to insect bites or stings. They're also sometimes used to prevent
motion sickness, to treat feeling sick (nausea) or being sick (vomiting), and as a short-term treatment for insomnia.
What is antihistamine used for?
What are antihistamines? Antihistamines are a class of medication that commonly treat allergy symptoms, like
runny nose, sneezing and itchy eyes. They can also treat some digestive conditions. Most antihistamines are
over-the-counter (OTC) medications, but they also come in prescription form.
What is the best antihistamine?
Allergists recommend long-acting, non-sedating antihistamines — ones that won't make you sleepy — for everyday use.
Though you may know them by their brand names, the generic versions tackle the same problems.
What are antihistamines?
Antihistamines are a class of medication that commonly treat allergy symptoms, like runny nose,
sneezing and itchy eyes. They can also treat some digestive conditions.
Most antihistamines are over-the-counter (OTC) medications, but they also come in prescription form.
Antihistamines are also common ingredients in the following OTC medications:
• Cold and flu products.
• Decongestants.
• Cough suppressants.
• Pain relievers.
Antihistamines work by blocking histamine receptors. “Anti-” means “against.” Histamine is a chemical your
immune system releases to send messages between different cells. Histamine has several functions, but it’s mainly known for its role in causing allergic and
anaphylactic symptoms. Allergic reactions can happen due to several substances (allergens), including: