A Mercedes spokesperson said the seven-time world champion was suffering with dizziness and fatigue.
Lewis Hamilton revealed he is suffering with symptoms of long Covid after he required medical attention following Sunday’s Hungarian Grand Prix.
But Hamilton could be seen to be struggling physically after the 70-lap race. He was assisted on to the podium, and then appeared unable to summon the strength to hold his champagne bottle.
Hamilton, who contracted coronavirus in Dubai last December and was ruled out of the Sakhir Grand Prix, was taken to see the Mercedes team doctor.
A Mercedes spokesperson said Hamilton was suffering with dizziness and fatigue.
The Briton was forced to miss his television interviews, before later speaking in the FIA’s official press conference for the top three finishers.
Hamilton said: “I haven’t spoken to anyone particularly about long Covid, but I think it is lingering there.
“I was having real dizziness and everything got a bit blurry on the podium. I have been fighting with staying healthy following what happened at the end of last year, but still it’s a battle.
“I remember the effects of when I had Covid, and training has been different ever since then. The level of fatigue that you get is different and it’s a real challenge.
“I’m trying to keep training and preparing as best I can. Who knows what it was today? Maybe it was hydration, I don’t know, but it was definitely different.
“I suffered with something similar earlier this month at Silverstone but this was way worse.”