Indian generic drugmaker Aurobindo Pharma Ltd (ARBN.NS) said on Wednesday its U.S. unit won a bankruptcy auction to buy nutritional supplements maker Natrol Inc for $132.5 million.

Aurobindo said the deal with Chatsworth, California-based Natrol, which sells vitamins and supplements as well as diet and weight management products, will help the company expand its over-the-counter products business in the United States.

The deal is pending final approval by the United StatesBankruptcy Court for the District of Delaware, Aurobindo said in a statement.

Barclays provided financial advice to Aurobindo on the deal, while Sullivan & Cromwell LLP was the company's legal counsel.

Aurobindo's shares were up 4 percent at 1,066 rupees at 11.47 p.m. ET on Wednesday, while the NSE index .NSEI was up 0.4 percent.