Steroids like prednisone can be used if the hives are quite severe. Read more Hyoscyamine 0125 mg sublingual is a pill with the same pharmacologic action as scopolamine, but you do not have to purchase an expensive patch.
It works usually in about 10 minutes after symptoms start. Read more BENADRYL (diphenhydramine) AND DRAMAMINE CONTAINE THE SAME ANTIHISTAMINE.
Dimenhydrinate is an over-the-counter drug used to prevent nausea and motion sickness.
Competes with histamine for H1 receptors on GI tract, blood vessels, and respiratory tract, reducing hypersensitivity reactions. Pseudoephedrine stimulates vasoconstriction by directly activating alpha-adrenergic receptors of the respiratory mucosa.
Relieves nasal congestion and systemic effects of seasonal allergy.
Most cases of allergic rhinitis respond to pharmacotherapy.
Patients with intermittent symptoms are often treated adequately with oral antihistamines, decongestants, or both as needed.
For this reason, some second-generation antihistamines are available as combination preparations containing a decongestant.
They are often preferred for first-line therapy of allergic rhinitis, especially for seasonal or episodic symptoms, because of their excellent efficacy and safety profile. The second-generation oral antihistamines currently available in the United States are cetirizine, levocetirizine, desloratadine, fexofenadine, and loratadine.
Induces also bronchial relaxation and increases heart rate and contractility by stimulating beta-adrenergic receptors.
Fexofenadine is a nonsedating second-generation medication with fewer adverse effects than first-generation medications.
The newer, second-generation (ie, nonsedating) antihistamines are usually preferable to avoid sedation and other adverse effects associated with the older, first-generation antihistamines.