In the wake of complaints from consumers, drug maker GlaxoSmithKline (GSK) has recalled its over-the-counter drug Alli meant for weight-loss in the United States and Puerto Rico.
The company found that some packages of the medicine were tampered with as labels were missing and seals were different.
The original capsule is turquoise blue. But capsules of various shapes and colours were found in several bottles, according to a statement by Glaxo.
Colin Mackenzie, president of Glaxo's North American consumer health-care division, said, "Safety is our first priority and we are asking retailers and pharmacies to remove all Alli from their shelves immediately."
The US Food and Drug Administration (FDA) is investigating into the case. The drug company has been asking consumers to cooperate by informing the company if they happen to buy any fake bottles.
Alli contains chemical orlistat that checks the intestines from absorbing fat when consumed with meals. Alli, which has been available in the US market since 2007, is the only over-the-counter weight loss drug that has a green signal from FDA.
Packages have been found to be tampered with in Alabama, Florida, Louisiana, Mississippi, New York, North Carolina and Texas.