In reply to sceptic_zero the energy boost I feel is definitely not due to caffeine increase as I have decreased considerably.
Due to being practicaly bed bound I've had no appetite for solid food. Perhaps 3 pieces of toast with peanut butter or avocado would be it for the day. What made up for a ridiculous amount of calories was my addiction to dare iced coffee I would drink 1 to 1.5 litres a day. Yeah I had a massive problem but I kept drinking it as it was the only thing that seemed to curb my acid reflux.. Stupid I know.
Serving size 250ml = 2558 kj, Carb 67.5g. Insanity.

Have not had a acid reflux attack in 4 days. Aches and pains due to arthritis almost non existent. Today I've been up for 11 hours and still not tired.. A record. Granted yes it's still early days but I haven't felt this good in so long