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Antihistamines, specifically H1-antihistamines, are medicines which provide relief for allergic symptoms such as runny nose, sneezing, itching, and watery eyes from seasonal allergies . They are usually the first line of medications prescribed by a general practitioner, or a pharmacist for allergies in a community pharmacy.
H 1 antagonists, also called H 1 blockers, are a class of medications that block the action of histamine at the H 1 receptor, helping to relieve allergic reactions.Agents where the main therapeutic effect is mediated by negative modulation of histamine receptors are termed antihistamines; other agents may have antihistaminergic action but are not true antihistamines.
Antihistamines: are a commonly prescribed first-line treatment for conventional urticaria, but its effectiveness in the treatment of CU is rather limited in most cases. [ 8 ] Treatment(s) with mixed success: omalizumab (anti-IgE therapy), [ 9 ] [ 10 ] danazol (synthetic androgen), [ 11 ] propranolol (beta blocker), [ 12 ] [ 13 ] zileuton ...
Chlorcyclizine (Di-Paralene, Mantadil, Pruresidine, Trihistan) is a first-generation antihistamine of the diphenylmethylpiperazine group marketed in the United States and certain other countries. [ 1 ] [ 2 ] [ 3 ] It is used primarily to treat allergy symptoms such as rhinitis , urticaria , and pruritus , and may also be used as an antiemetic .
However, antihistamines cannot antagonize activated histamine that has already been released from mast cells. [7] In severe cases of drug allergy, systemic corticosteroids may be used. [ 6 ] Corticosteroids are limited by a delayed onset of action of greater than 45 minutes as they act via gene modulation . [ 7 ]
Pages in category "Antihistamines" The following 45 pages are in this category, out of 45 total. This list may not reflect recent changes. ...
Antihistamines are drugs which treat allergic rhinitis, common cold, influenza, and other allergies. [1] Typically, people take antihistamines as an inexpensive, generic (not patented) drug that can be bought without a prescription and provides relief from nasal congestion, sneezing, or hives caused by pollen, dust mites, or animal allergy with few side effects. [1]
Betamethasone is a steroid to relieve itches and inflammation while dexchlorpheniramine maleate is an antihistamine to treat urticaria. References