Merck is recalling 276,000 bottles of branded chemotherapy drug, Temodar and generic drug, temozolomide, due to cracked child-proof caps.

Merck says the defect -- which occurred during the manufacturing process -- affects about 1,100 bottles. The quality of the medication in the bottles is not affected.

Temozolomide, the generic version, is made and packaged by Merck, but sold by Novartis' Sandoz.

Read the Merck press release