The telehealth company has been selling a copycat version of a popular obesity drug during the recent shortage.

Key TakeawaysHims & Hers Health shares swooned after the Food & Drug Administration said the active ingredient in Ozempic and Wegovy is no longer in short supply.The company makes compounded versions of weight-loss drugs under an FDA rule that applies when the originals are difficult to obtain.

Shares of Hims & Hers Health Inc ( HIMS 17.50%) are flying higher on Wednesday. The company's stock gained 21.7% as of 2:00 p.m. ET, and was up as much as 24.8% earlier in the day. The gain comes as the S&P 500 gained 0.1%, and the Nasdaq Composite was flat.