Liverpool manager Jurgen Klopp returned to work on Thursday, a day after admitting himself to hospital.
The 50-year-old, who missed Wednesday's training session after feeling unwell, is back at Melwood.
He was discharged from hospital on Wednesday evening having been admitted for tests earlier in the day and spent the night at home.
Klopp is scheduled to face the media tomorrow for his pre-match news conference ahead of Saturday's home game against Southampton.
The German's only doubt for that match is Sadio Mane who picked up a hamstring injury on international duty with Senegal.
All players including Alberto Moreno, Emre Can, Georginio Wijnaldum and Marko Grujic have now returned to Liverpool from international duty.