Only just seen this thread, and would second giving it a go. DS2 had terrible colic, and would have this heart-rending pleading look in his eyes each evening: "Please help me, Mummy, PLEEEEASE!", his little eyes used to say. It was awful . I was very sceptical about CO, believing it to be a load of hocus pocus hippy nonsense, but after a few weeks of DH working away every night, and me trying to put crying DS1 to bed (who was just over 2 at the time), and settle a screaming DS2, and me crying with exhaustion and stress, I was willing to give anything a go.
I'd noticed that DS2 would always settle to sleep (Hah! Well, not settle, exactly. More like fall into an exhausted sleep about 10.30pm) with his head always flopping to the same side. After the first session of CO, there was no evening screaming that night, he just fell asleep in my arms (really felt like a miracle at the time, I can tell you!). Also, he had the biggest poo you've ever seen during or straight after the session (the osteopath said that might happen and was a good sign). After the next session, 2 weeks later I must admit he was suddenly worse than he'd ever been. It was very frightening that night, trying to comfort him and get him to sleep - the amount of pain that he seemed to be in. BUT, and this is a HUGE "BUT", the next morning I had to wake him up (he usually woke me), and I found him with his head TO THE OTHER SIDE!!! For the first time since he'd been born. I can only assume that the CO had realigned some trapped nerve in his neck and the screaming session the night before had been him readjusting to that. He was due to have a third session, but to be honest, at 30 quid a pop, I just couldn't afford it, and as it seemed to have rectified his "head to one side only" problem, I kind of thought I'd ride out thbe last few weeks of colic (he was by this time about 10 weeks old). His colic was improved by this time, but he was still very whingey generally so I think a third session would have been beneficial. But, as I say, I was just so astonished to see him holding his head in a relaxed way both sides. (DS1 has a noticeable flat spot on his head, even though he is now 5, becuase he would only ever sleep one side too). DS2 does not have a flat spot, and I'm convinced it was the CO that helped with that.
I am very to see other mums who just have these angel babies that just sigh and fall sleep peacefully without screaming (my sister's second baby was like that, whilst her first had the whole screaming colic thing going on so she KNOWS it's not just the way you parent them). I really think that CO should automatically be performed on newborn babies on the NHS - it would save parents a lot of heartache. It's really not mumbo jumbo.
Love, a former sceptic!