Allegra non sedating antihistamines
Essentially, the conclusion was that there is no evidence that it is harmful, but also little evidence that it has any therapeutic effect.
It thus is similar in official status to an inert substance.
Learn how to pronounce the drug's name, its indications, dosage, how to take, when to take, when not to take, side effects, special precautions, its storage instructions and warnings if any when taken during pregnancy.
A recent study of hydrops found that betahistine had no effect (Gurlov et al, 2012).Explanations commonly given are that the drug is a vasodilator, or that it acts on subreceptors of histamine.