Jurgen Klopp returned to Liverpool training on Thursday after visiting hospital the day before.
The Reds boss missed training Wednesday as he attended a hospital appointment as a precautionary measure after feeling ill.
Klopp had said he felt unwell after a charity trip to South Africa.
He was back at Melwood on Thursday, however, to oversee training as normal.
Liverpool return to Premier League action following the international break against Southampton at Anfield on Saturday.