Stunted growth caused by Steriods

My fiance was diagnosed with Multiple Sclerosis in September of 2009. He was in the hospital for two weeks and they put him on heavy doses of prednisone. They 'forgot' to ween him off and he was on it till April of the following year. He was 15 when he was diagnosed and he's 18 now.

He's already has a work-up with a homeopathic doctor, but right now it's hard to make ends meet, so I'm turning to the forum for help.

He's on a gluten-free, all organic diet with supplements including: vit-e, vit-c, magnesium, vit-d, vit-k, cod liver oil, Aloe Vera Juice, Homocysteine, Curcumin, Inosine for MS, Brain Vitale, BioMax Food Multi III.

When he's having MS symptoms he takes Gelsemium, when he has jaw pain he takes Rhus Tox, and when he has a head ache he takes Belladonna. He takes no over the counter medicine, no prescriptions, and drinks only water and milk.

He hasn't grown since he was 15, and he's only 5'9', his family is tall and he is built to be taller, his expected height was to be 6'5'. Most of his family, including his mother are tall and he hasn't even reached 5'10'. I would appreciate any help, my fiance is getting depressed about his height.