Jane,
 
One oz of Pure 5ppm CS + 1/4 tsp msm - stir until dissolved.  You can divide it 
into three and give it to him 3 times a day using that divided dosage.  This is 
what DB gave his kids.  My husband often times just sit and nebulize the entire 
1 oz of CS with remarkable result.
 
Hope this helps.
 
Melly
 
Legal:
I am not a doctor and we just experimented on this.