The FDA has officially notified Walgreen's about having the worst track record of all pharmacies for selling tobacco to teens.
According to the FDA, the pharmacy chain had 1,800 violations nationwide since 2010 for teen tobacco sales.
Commissioner Scott Gottlieb said he was "deeply disturbed" about the number of violations.
The FBA will consider enforcement actions if Walgreen's doesn't correct the matter.
A Walgreen's spokesperson says the company is already taking steps such as requiring identification for anyone purchasing tobacco regardless of age.
Other stores to come under fire included Dollar General and Rite Aid.
About 5 million teens nationwide used tobacco last year.