Herbalife shares opened sharply lower on Friday after the company revealed regulators asked the diet shake maker for information about possible anti-corruption violations in China.

After being down 3.5 percent, the shares rallied as the company also reported it is planning to borrow $1.3 billion to be used for general corporate purposes, pay down $410 million in existing debt — and possibly institute a share repurchase plan, it said in the filing.

Shares closed down 13 cents, to $53.01.