Vegetative State

Owen, Dr Adrian - 
Dr discovers that patient is not brain dead nor in vegetative state, but rather trapped in brain.  Chief researcher Adrian Owen, a neuroscientist with the British Medical Research Council's Cognition and Brain Sciences Unit, said there was now "proof of principle" that fMRI could supplement existing methods to test a patient's awareness.

Alternative Medicine

Noni (Morinda citrifolia or Indian Mulberry) - Seems to be an all around grandmothers 'cure all' or tonic.

Royal Jelly - An ancient food fed to the queen bee by the worker bees.  Nutritional King of all the foods.  Use SPARINGLY so as not to incur alergy.  Add a dash of raw honey.  Refirgerate.  Could help to sustain life for years with hydration. 
The Chinese sell royal jelly in honey small packets/bottles.  Perfect.  A shot would look something like this
However, we are NOT recommending this product, only this as one size and method as a possible means of delivery to patient.
Royal Jelly - - One of many good potential sources.