The nasal spray is a very easy and convenient way to administer methyl-B12. A study is currently being conducted at UCLA using a methyl-B12 nasal spray treating Autism. The usualy dose is 1 spray daily (1.25mg). THe 6ml will last for 60 days. Folinic acid may be added on request. It is sent by courier packed in an esky with ice and needs to be stored in the fridge.