Russian opposition figure Alexei Navalny has been discharged by the hospital treating him in Berlin, BBC News reported.

The Charite Hospital said it was ending acute medical care because his condition had sufficiently improved.

Navalny posted a picture of himself on social media standing unaided with a message saying doctors had given him every chance of a full recovery.

Germany says Navalny, a critic of Russian President Vladimir Putin, was poisoned with a Novichok nerve agent.

He collapsed on a flight from Siberia on August 20, and was transferred to the Charite hospital in the German capital city.

His team alleges he was poisoned on the orders of President Putin. The Kremlin denies any involvement.