When Bollywood megastar Amitabh Bachchan expressed his concern over Shah Rukh Khan's health, the actor was quick to call him to acknowledge his concern.

Amitabh had tweeted on Shah Rukh's account: "ShahRukh... you were sounding fine... but you need to sound better... look after yourself."

After that Shah Rukh called the 67-year-old to reply to the online message.

"Had a call from Shah Rukh acknowledging my concern for his health on twitter. Laughed and joked a bit about his condition, his body suit, and his twit page getting jammed by millions of tweets from journalist friends, thereby not being able to get to read some of the messages he is getting.

"Gauri, his wife, he said had made him aware of my tweet and was expressing concern that he was still not looking after himself, despite my little health care advice, " Amitabh posted on his blog.

The two superstars have worked on a couple of films together including "Mohabbatein" and "Kabhi Khushi Kabhie Gham".