The pill may possibly have been
CLARITIN 10mg
Generic Name Loratadine Tab 10 MG
Mfg / Labeler SCHERING
Imprint Code CLARITIN 10 / 458
Color white
Shape round
You will find an image of this pill at the bottom of the PDR page for Claritin at Drugs.com
http://www.drugs.com/PDR/Claritin_Tablets.html
Claritin (Loratadine) is an antihistamine. Antihistamines prevent sneezing, runny nose, itching and watering of the eyes, and other allergic symptoms.
Loratadine is used to treat allergies, hives (urticaria), and other allergic inflammatory conditions.
More info at
http://claritin.drugs.com