San Francisco 49ers star tight end George Kittle almost retired because of the league's ban on a popular substance.

The NFL is banning the use of smelling salts and ammonia packets before and during all games, a ruling that has upset 49ers ...

Is George Kittle considering retirement? Well, not really, but the 49ers tight end did tell NFL Network’s Mike Garafolo that ...

The NFL is banning the use of smelling salts during games, citing safety concerns and the potential to mask concussion symptoms.

On the same day George Kittle threatened retirement, the Saints claimed one of his backups off the waiver wire. Get to know ...

#49ers George Kittle just crashed our set to break news that the NFL banned smelling salts and ammonia packets today. Says he ...

During Tuesday's San Francisco 49ers practice, tight end George Kittle made a surprise appearance during an NFL Network ...

Right tackle Colton McKivitz had glowing reviews for the 49ers’ youthful new defensive line. He talked up Williams, Collins ...

Ammonia and smelling salts have long been used as a stimulant by NFL players as well as other athletes, though the risks that ...

According to Garafolo, San Francisco 49ers tight end George Kittle said he used smelling salts and ammonia packets on every ...

Are smelling salts being banned by the NFL? Here's what Kittle shared about the news, and why players have used them in the ...