Spanish star Enrique Iglesias is reliant on sleeping pills - because he suffers badly from insomnia. The Hero singer, 32, has been struggling with the sleep disorder for several months, and has been forced to rely on prescription pills to help him get some rest. But even increasing his dosage has failed to solve the problem completely. He says, "I have been having real trouble sleeping... I've been on Ambian (prescription drug) to try to sort out the problem. "I started off on 5mg, then when that didn't work I went to 10, 15, 20 and now I'm on 30mg a day and it's still not working 100 per cent. "I went to see the doctor the other day and he stuck a camera down my throat to see what was going on in my stomach and he gave me a shot that knocked me out for 30 minutes. It was honestly the best sleep I've had in years! I tried to get him to give me some to take away with me, but it's for surgery only."