They are available over the counter and can be used for pediatrics at the recommended doses.
They should also be used to prevent motion sickness rather than treating it.
Less common adverse effects include palpitations, urinary retention, bloating, constipation, headache, and confusion.
Scopolamine, which is most commonly prescribed as a transdermal patch, should be administered at least 30 minutes prior to exposure to motion stimuli.
[ Read the disclaimer | Adults: Allergic rhinitis, seasonal/perennial: 5 mg po qd. In patients with liver or renal impairment, a starting dose of one 5 mg tablet every other day is recommended based on pharmacokinetic data.
Mechanism of Action Desloratadine is a long-acting tricyclic histamine antagonist with selective H1-receptor histamine antagonist activity.
An antihistamine, it treats runny nose, itchy nose/eyes and sneezing.
All forms of Allegra are now over-the-counter, including Children's Allegra, Allegra-D 12 hour and Allegra-D 24 hour.PLEASE READ THE DISCLAIMER CAREFULLY BEFORE ACCESSING OR USING THIS SITE.BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER.Besides only working for half as long, the 12 hour version contains 60 mg of Allegra. The plain Allegra is also available in 24 and 12 hour doses, but the 24 hour dose actually contains three-times more medicine than the 12 hour dose (180 mg vs. Allegra is almost as strong as Zyrtec, but far less sedating. Claritin may be non-sedating, but is barely more effective than placebo ("The Claritin Effect; Prescription for Profit". Allegra went generic by prescription several years ago, and 95% of its prescriptions were being filled with generic fexofenadine.Meanwhile, 60% of OTC sales for Claritin and Zyrtec are for the brand-name pills, not generic.Receptor binding data indicate that at a concentration of 2–3 ng/m L (7 nanomolar), desloratadine shows significant interaction with the human histamine H1-receptor.