Lovren sustained a thigh injury in the warm-up for Saturday’s Premier League game against Huddersfield Town, which the Reds won 3-0.
Since that match, meanwhile, Gomez and Moreno are being assessed before Jürgen Klopp makes the final decision on his starting line-up to face the Slovenian champions.
Asked for an update on fitness concerns, the boss told Liverpoolfc.com: “We had a few – it’s not fixed so far.
“We had a few little issues after the game: of course, before the game Dejan was already out; Joe a little bit, nothing too serious; Alberto Moreno.
“It was an intense game for us, there was pressure on it. We really have to look and we need to use each hour. In the end, we will line up the line-up we expect the most of.”
Klopp also confirmed that Loris Karius will continue his run of Champions League appearances on Wednesday night. “Yes, there’s no doubt,” said the German.