Ads
related to: 1st generation vs 2nd antihistamine medication reviews
Search results
Results From The WOW.Com Content Network
The most common adverse effects noted for second-generation agents include drowsiness, fatigue, headache, nausea and dry mouth. [4] Continuous and/or cumulative use of anticholinergic medications, including first-generation antihistamines, is associated with higher risk for cognitive decline and dementia in older people. [8] [9]
The introduction of the first-generation antihistamines marked the beginning of medical treatment of nasal allergies. [28] Research into these drugs led to the discovery that they were H 1 receptor antagonists and also to the development of H 2 receptor antagonists , where H 1 -antihistamines affected the nose and the H 2 -antihistamines ...
First-generation antihistamines usually last around 4–6 hours whilst second-generation antihistamines work for 12–24 hours. [7] Third generation antihistamines are metabolites of the second-generation antihistamines but without cardiac toxicity. [8] Indications and route of administration
It is a first-generation antihistamine and works by blocking the histamine H 1 receptor. [2] Common side effects include sleepiness, restlessness, and weakness. Other side effects may include dry mouth and wheeziness. [2] Chlorpheniramine was patented in 1948 and came into medical use in 1949. [3] It is available as a generic medication and ...
It is a first-generation antihistamine in the piperazine family of chemicals. [8] [4] Common side effects include sleepiness, headache, and dry mouth. [8] [9] Serious side effects may include QT prolongation. [9] It is unclear if use during pregnancy or breastfeeding is safe. [8]
Cetirizine is a second-generation antihistamine used to treat allergic rhinitis (hay fever), dermatitis, and urticaria (hives). [5] It is taken by mouth. [6] Effects generally begin within thirty minutes and last for about a day. [6] The degree of benefit is similar to other antihistamines such as diphenhydramine, which is a first-generation ...