I have also had some very positive experiences with osteopathic treatment on myself and my children. My DS's have had treatments for colic, restlessness and poor sleeping when they were babies.
DS1 has suffered from ear infections which repeated antibiotics were not clearing up, Osteopathy treatments have helped the ears to drain, relieved pain and helped speed up recovery. DS1 also had a couple of treatments while he had croup, on the first one, he couldn't speak when he went in and he could when he came out.
They also see the Osteopath when they have coughs as releasing the chest and allowing the lungs and the ribs to move more freely aids recovery. DS2 was a very snotty baby and streamed clear mucus from his nose constantly for months, after one particular treatment to treat this, it stopped within 12 hours.
DD has not required much treatment but on two occasions, she has been not quite herself, running a low level unexplained fever, been very quiet and unsmiling for a couple of days. She complained of a sore neck and 20 minutes into the treatment to release whatever stiffness was there, she giggled and laughed and her temperature returned to normal within an hour.
I have also had treatment post pregnancy, and after a blow to the jaw (helping a friend to do a handstand in yoga, not domestic violence!!) after which I was able to move my jaw again and it relieved the pain.
A friend who was struggling with breast feeding saw a positive difference in her milk production on one side that was not producing as much mill as the other. I can't remember the exact details but there is a nerve between the third and fourth intercostal muscles that is instrumental in triggering the let down reflex (explained to me by a qualified lactation consultant) and massaging this can allow the body to produce / release milk if it is blocked in some way.