Fexofenadine is also called by the brand name Telfast, Allegra, Allegra 24 Hour Allergy, Allegra Allergy, Allegra ODT, Aller-Ease, Children’s Allegra Allergy, Children’s Allegra ODT, Allergy Relief (Fexofenadine HCl), Mucinex Allergy, Wal-Fex and Allegra OTC. The generic version of Allegra can be similarly priced or more expensive than the actual medication. Washing your hands often. according to the 'net 25mg is the lowest doseso I am assuming that a higher dose of Phenergan would have "the Sleeper effect". Yes, Shash, it is safe to take both of these antihistamines at the same time. she's on singulair,zyrtec and two inhailers (ventolin and flixotide) is that too much ? Although Allegra and Singulair have a lot in common, they have a few notable differences Singulair (montelukast) is a leukotriene receptor blocker used to help control symptoms of asthma in adults and children 12 months and older, and for relief of symptoms of indoor and outdoor. Patients also may present with nausea, prolonged QT interval is not one of them Dangers of long-term Phenergan usage? the more severe the side effects become. Its chemical name is 11ß,17, 21-Trihydroxypregna-1,4- diene-3, 20-dione 21-acetate and it has the following structure:. The recommended dosage of Phenergan for treating motion sickness in adults is 25 mg (in tablet, rectal suppository, or syrup form) twice daily. Take this elixir adapted to rant irregardless a crown kristina vigora glass apropos of douche. Additionally Periactin is used to prevent such symptoms as motion sickness, vomiting, nausea, and dizziness. I have gone through three high dose rounds of carbo/taxol for which they premedicated me with aloxi before transfusion. To be sure you get the correct dose, measure the liquid with a marked measuring spoon or medicine cup, not with a regular table spoon.