Herbalife Ltd., which sells nutritional supplements, said Thursday its board of directors authorized an increase of $150 million to its share repurchase plan.

The increase raises the total authorized amount of shares available for repurchase to $450 million.

To finance a portion of the program, Herbalife (nyse: HLF - news - people ) said it requested an additional $150 million in its revolving credit commitments. That would bring its credit line up to $250 million, the company said.