A decisive passer earlier in the match, Diogo Jota was injured in an action where his partner Alexis Mac Allister and Brentford midfielder Christian Norgaard fell on him.
He left the field in the 44th minute in pain and was replaced by Mohamed Salah, back with Liverpool for the first time since his injury on January 18 with Egypt at the African Cup of Nations.
The Reds also lost Curtis Jones earlier in the match on Saturday, a physical problem which adds to the injuries to goalkeeper Alisson Becker and midfielder Dominik Szoboszlai, among others.
Liverpool, current leader of the Premier League, is still in contention in the Europa League, the FA Cup and the League Cup, of which it is playing the final next weekend against Chelsea.
In the meantime, the Reds consolidated their first place at Brentford (4-1) on Saturday in the Premier League but lost two players to injury, including winger Diogo Jota, taken out on a stretcher and replaced by Mohamed Salah, scorer and decisive passer for his team. back.
The Reds are five points ahead of Manchester City and Arsenal, engaged later Saturday in the 25th day. The Citizens also have a late match to play, Tuesday against Brentford.
Liverpool stung the “Bees” with Darwin Nunez (35th), Alexis Mac Allister (55th) then Mohamed Salah (68th), already a decisive passer for the Argentine midfielder.
Ivan Toney (75th) saved the honor for the locals before a final goal from Cody Gakpo (86th) for Liverpool.
The success of the Reds was overshadowed by the injury exits of Curtis Jones (34th) and Diogo Jota (44th). The Portuguese winger was evacuated on a stretcher, injured in one leg.
These annoyances come on top of injuries to goalkeeper Alisson Becker, defender Trent Alexander-Arnold and midfielders Dominik Szoboszlai and Thiago Alcantara, among others.
Still in contention in the Europa League, FA Cup and League Cup (final on February 25 against Chelsea), Liverpool however found their talisman winger, Mohamed Salah, on Saturday.
The Egyptian, who came into play in place of Jota, had not played again since his thigh injury on January 18 with Egypt at the African Cup of Nations. He took care of his comeback with an assist and a goal.