The presidency confirmed his release from hospital on Sunday, four days after he was admitted with acute respiratory problems.
“After concluding the necessary treatment, the president feels well — his physical condition is satisfactory,” Mr. Yanukovych’s office said.
Opposition groups have for weeks been staging violent protests in the capital Kiev and other parts of the country, demanding the president’s resignation and early elections.
So far, four protesters are confirmed to have been killed and some 500 people have been reported injured. Three of the protesters died of gunshot wounds and one was found dead in the woods with signs of torture.
Opposition leader Vitaly Klitschko on Sunday called on citizens to form local neighbourhood watch units to fend off violent gangs he said were deployed by the government to add to the chaos.
“Democratic forces should bring the protest to their local government,” he told protesters on Independence Square in Kiev.