PITTSBURGH The Food and Drug Administration has approved a generic version of a prescription laxative made by Mylan, the generic drug company announced Friday.

The FDA approved Mylan’s polyethylene glycol 3350 and electrolytes for oral solution, a generic version of Braintree Labs’ GoLytely.

Branded and generic versions of the drug had sales of $14 million during the 12-month period ended Sept. 30, according to IMS Health.