Lampard recovered quickly from an injury he suffered while away with England for the friendly against Brazil in Qatar.
"It has been a rapid recovery really," Lampard said.
"It was very small treatment out there. For me it wasn't anything extraordinary in terms of the placenta stuff, I didn't have any of that treatment.
"The trip to Serbia was by no means a trip which didn't help me at all and in fact it was quite an experience, but the real work was done at the training ground.
"I would like to give credit to our medical team, they are the best by far and they were the ones who really did it.
"I would have expected to be fit for the Manchester City game at first, but luckily enough we have got great doctors and physios, who have worked hard with me over the last week or so."