An H3-antihistamine is a classification of drugs used to inhibit the action of histamine at the H 3 receptor. H 3 receptors are primarily found in the brain and are inhibitory autoreceptors located … Allergies getting the best of you? Pharmacists ranked the best allergy medicines. These are their rankings of OTCantihistamines to treat allergies. · Browse common antihistaminedrugs: compare first- and second-generation options, brand vs generic names, uses, side effects, and user ratings. · Antihistamines are drugs that can relieve allergy symptoms such as runny nose, sneezing, and congestion. Many over-the-counter brand-name antihistamines are available, from Benadryl to Zyrtec. · There are so many options, from antihistamines to steroids to pills to nasal sprays — and, they all promise to unclog your nose, stop your sneezing and just make you feel better. So, what OTC... Popular OTC antihistamines include cetirizine (Zyrtec), fexofenadine (Allegra), and loratadine (Claritin). These “second-generation” antihistamines are less likely to cause drowsiness than older medications like diphenhydramine (Benadryl). Taking an antihistamine at bedtime may help you or your child feel better in the morning. Again, if you don’t know what’s best for you or have questions, talking to a healthcare provider or … · Not all antihistamines work equally well for all allergic conditions. If buying an OTC antihistamine, speak with your healthcare provider or pharmacist to determine whether it is the … · It’s important to consider a few other things when deciding if an antihistamine is right for you, including potential drug interactions and whether you are in an at-risk population. · Which antihistamine is best for allergies? There’s no one antihistamine that’s best for allergies. There's not much evidence to suggest any particular antihistamine is better than any other at relieving allergy symptoms. Some people find certain types work well for them and others do not. · Antihistamine eye drops may be advised when itchy eyes are a particular problem - for example, azelastine eye drops or ketotifen eye drops. A sedating antihistamine may be … · Fortunately, there are several over-the-counter (OTC) medications that can help. Zyrtec (cetirizine), Claritin (loratadine), and Allegra (fexofenadine) are examples of popular OTC antihistamines. · Antihistamines and intranasal steroid sprays are the main two medications recommended to treat allergy symptoms, according to the American Academy of Otolaryngic Allergy. There are two generations of antihistamines. Benadryl or diphenhydramine, and chlorpheniramine are part of the first generation. Second-generation antihistamines include:
