wisconsindatinggroup com - Is xyzal a non sedating antihistamine
These medications cause much less sedation and are therefore preferred over the older, sedating forms.
Allegra will also be available OTC in the Spring of 2011.
The package insert for Xyzal confirms weight gain as a known side effect but reports this as only occurring in 0.5% of people in studies who were taking this medication.
Older antihistamines, such as Periactin (cyproheptadine), have actually been used for the purpose of increasing appetite and weight gain in underweight children and cancer patients undergoing chemotherapy.
Antihistamines Available by Prescription Only While many older, sedating antihistamines are now available OTC, Atarax is still only available by prescription.