Cadila Healthcare Ltd (Zydus Cadila) said here on Tuesday that it has received the final approval from the USFDA to market Entecavir cablets in the strengths of 0.5 mg and 1 mg. The drug is used in the treatment of Hepatitis B virus infection and will be produced at the group’s formulations manufacturing facility at the Pharma SEZ in Ahmedabad, the company said in a release here. The estimated sale for Entecavir tablets is $166.3 million per annum. The group now has more than 120 approvals and has so far filed over 300 ANDAs since the commencement of the filing process in financial year 2003-04.