GlaxoSmithKline is recalling its weight loss drug Alli after learning some of the bottles have been tampered with.
The real capsule is a turquoise blue color, but consumers have reported finding tablets and capsules of other shapes and colors inside the bottles.
There are also reports the tamper-resistant seals on some bottles are not authentic.
Some bottles are even missing their labels, according to GlaxoSmithKline.
The pharmaceutical company has received about 20 complaints of tampered Alli bottles so far.
There have been no reports of serious illness.
Alli's website reads: "To date, some bottles bearing the following lot numbers and expiration dates on the carton have been reported to us by consumers as containing product other than alli:"
- Carton Lot 14372, Expiration: 02/28/2016
- Carton Lot 14395, Expiration: 02/28/2016
- Carton Lot 14124, Expiration: 09/30/2015
- Carton Lot 14267, Expiration: 01/31/2016
- Carton Lot 14442, Expiration: 04/30/2016